AIThis post was created with the assistance of artificial intelligence (AI).

Choosing among the best flagship Android smartphones here means weighing very different kinds of value. The OnePlus 15 is the strongest all-around choice on paper, pairing a current flagship processor with a large battery, fast display and broad durability ratings. The Samsung Galaxy S21 Ultra offers a more camera-focused premium experience, while the Nothing Phone (4a) Pro brings a bright, high-refresh display and a modern camera setup at a less performance-focused tier.

Prime Big Deal Days · Oct 6–7Offer from Amazon

Get the latest gadgets delivered free — and shop member deals

  • Fast, free delivery on millions of items
  • Access to Prime Big Deal Days deals on October 6–7
  • Prime Video, Amazon Music and more included
Start your free Prime trial Free trial for eligible customers · Cancel anytime
As an affiliate, we earn on qualifying purchases.

Those strengths come with tradeoffs. The OnePlus is a large phone, and its 165 Hz screen may matter less to everyday users than battery life or camera preference. Samsung’s two picks are renewed, with the S23 FE also tied to AT&T, while the Nothing’s carrier support needs checking, especially for Verizon users. I rank these options by their fit for flagship buyers, considering performance, display, cameras, battery, connectivity, durability and the condition or compatibility caveats disclosed for each product.

5
compared
4
brands
3
processors
165 Hz
max refresh rate
Which flagship Android smartphone should you buy?
★ Top Pick
OnePlus 15 Unlocked Android Sm
Best Overall
Snapdragon 8 Elite Gen 5 processor with 16GB RAM
See on Amazon →
A buyer who specifically wants a large Samsung screen, long-range zoom features and S Pen support in an unlocked phone.
Samsung Galaxy S21 Ultra 5G
6.8-inch AMOLED display with a 120 Hz refresh rate
View on Amazon →
Buyers who prioritize a very bright high-refresh AMOLED screen, a versatile camera set and a premium-feeling build, and whose carrier is supported.
Nothing Phone
6.83-inch 1.5K AMOLED display with adaptive refresh up to 144 Hz
View on Amazon →
AT&T customers who want a Samsung phone with a 6.4-inch 120 Hz OLED screen and triple rear cameras.
Samsung Galaxy S23 FE 5G
6.4-inch OLED display with a 120 Hz refresh rate
View on Amazon →
A buyer seeking an unlocked renewed Android phone with 256GB storage, 8GB RAM and a 5,000 mAh battery.
Motorola Moto Edge
256GB storage and 8GB RAM
View on Amazon →
Refresh rate — compared
OnePlus 15 Unlocked Android Sm165 Hz
Samsung Galaxy S21 Ultra 5G120 Hz
Samsung Galaxy S23 FE 5G120 Hz
Pros & cons at a glance
OnePlus 15 Unlocked Android Sm
✓ Snapdragon 8 Elite Gen 5 processor with 16GB RAM
✗ Large 6.78-inch format may be awkward for one-handed use
Samsung Galaxy S21 Ultra 5G
✓ 6.8-inch AMOLED display with a 120 Hz refresh rate
✗ Renewed condition may include cosmetic imperfections
Nothing Phone
✓ 6.83-inch 1.5K AMOLED display with adaptive refresh up to 144 Hz
✗ Verizon use is not recommended and carrier band support varies
Samsung Galaxy S23 FE 5G
✓ 6.4-inch OLED display with a 120 Hz refresh rate
✗ Renewed condition may include signs of prior use
Motorola Moto Edge
✓ 256GB storage and 8GB RAM
✗ Renewed condition means it is pre-owned or refurbished

Complete the kit

iO CLEAN 16oz Screen Cleaner Spray – Best Large Cleaning Kit
iO CLEAN 16oz Screen Cleaner Spray – Best Large Cleaning Kit
Add to your setup →
EVEO Screen Cleaner Spray - Large Screen Cleaner Bottle -...
EVEO Screen Cleaner Spray – Large Screen Cleaner Bottle -…
Add to your setup →
Screen Cleaner Spray and Wipe - TV screen cleaner spray a...
Screen Cleaner Spray and Wipe – TV screen cleaner spray a…
Add to your setup →

Key Takeaways

  • The OnePlus 15 is the most complete new-generation flagship-style pick, with a Snapdragon 8 Elite Gen 5 chip, 16GB RAM, 512GB storage and a 7,300 mAh battery.
  • The Galaxy S21 Ultra is the camera and stylus specialist, offering a 108MP main camera, up to 100x zoom and S Pen support, but it is a renewed older model.
  • The Nothing Phone (4a) Pro has the most eye-catching display specification in the midrange group, but its Snapdragon 7 Gen 4 is below the OnePlus flagship processor and Verizon is not recommended.
  • The Galaxy S23 FE is the more manageable Samsung option, with a 6.4-inch 120 Hz OLED screen and triple cameras, but this listing is renewed and locked to AT&T.
  • The Moto Edge (2021) has generous storage, RAM and battery capacity for its age, yet its older platform, 1080p video, renewed condition and lack of water resistance make it the least convincing flagship choice.
2
Samsung Galaxy S21 Ultra 5G
Best for Zoom and S Pen Support
3
Nothing Phone
Best for Display and Design

Our Top Best Flagship Android Smartphones Picks

OnePlus 15 Unlocked Android Smartphone, 16GB RAM, 512GB Storage, Dual SIM, Ultra VioletOnePlus 15 Unlocked Android Smartphone, 16GB RAM, 512GB Storage, Dual SIM, Ultra VioletBest OverallProcessor: Snapdragon 8 Elite Gen 5Memory: 16GB RAMStorage: 512GBVIEW LATEST PRICESee Our Full Breakdown
Samsung Galaxy S21 Ultra 5G, US Version, 128GB, Phantom Black – Unlocked (Renewed)Samsung Galaxy S21 Ultra 5G, US Version, 128GB, Phantom Black - Unlocked (Renewed)Best for Zoom and S Pen SupportDisplay: 6.8-inch AMOLEDRefresh rate: 120 HzMain camera: 108MPVIEW LATEST PRICESee Our Full Breakdown
Nothing Phone (4a) Pro Unlocked Android Smartphone, 12GB RAM, 256GB Storage, BlackNothing Phone (4a) Pro Unlocked Android Smartphone, 12GB RAM, 256GB Storage, BlackBest for Display and DesignProcessor: Qualcomm Snapdragon 7 Gen 4Memory and storage: 12GB RAM; 256GB storageDisplay: 6.83-inch 1.5K AMOLEDVIEW LATEST PRICESee Our Full Breakdown
Samsung Galaxy S23 FE 5G, 128GB, Graphite, AT&T (Renewed)Samsung Galaxy S23 FE 5G, 128GB, Graphite, AT&T (Renewed)Best for a Smaller Samsung ScreenDisplay: 6.4-inch OLED, 1080 × 2340Refresh rate: 120 HzMemory and storage: 8GB RAM; 128GBVIEW LATEST PRICESee Our Full Breakdown
Motorola Moto Edge (2021), 256GB, 8GB RAM, Nebula Blue, Unlocked (Renewed)Motorola Moto Edge (2021), 256GB, 8GB RAM, Nebula Blue, Unlocked (Renewed)Best for Storage on an Older PlatformProcessor: Snapdragon; specific model not statedMemory and storage: 8GB RAM; 256GBRear camera: 108MPVIEW LATEST PRICESee Our Full Breakdown
Specs at a glance
flagship Android smartphoneDisplayProcessorRefresh rateRear cameras
OnePlus 15 Unlocked Android Sm6.78-inch AMOLED, 2772 × 1272 pixelsSnapdragon 8 Elite Gen 5165 HzTriple 50MP system
Samsung Galaxy S21 Ultra 5G6.8-inch AMOLED—120 Hz—
Nothing Phone6.83-inch 1.5K AMOLEDQualcomm Snapdragon 7 Gen 4—50MP main with OIS, 50MP periscope telephoto, 8MP ultra-wide
Samsung Galaxy S23 FE 5G6.4-inch OLED, 1080 × 2340—120 HzTriple camera system with HDR and slow-motion modes
Motorola Moto Edge—Snapdragon; specific model not stated——

More Details on Our Top Picks

  1. OnePlus 15 Unlocked Android Smartphone, 16GB RAM, 512GB Storage, Dual SIM, Ultra Violet

    OnePlus 15 Unlocked Android Smartphone, 16GB RAM, 512GB Storage, Dual SIM, Ultra Violet

    Best Overall

    View Latest Price

    The OnePlus 15 makes the strongest case for a flagship buyer who wants a current, high-spec Android phone without a narrow specialty. Its Snapdragon 8 Elite Gen 5 processor, 16GB of RAM and 512GB of storage give it the most substantial performance and capacity combination in this group. Compared with the Galaxy S21 Ultra and Galaxy S23 FE, it is the more forward-looking choice on the supplied specs, while the Nothing Phone (4a) Pro uses a Snapdragon 7 Gen 4 processor aimed at a lower performance tier.

    The rest of the package is similarly ambitious: a 6.78-inch 165 Hz AMOLED display, three 50MP rear cameras and a 7,300 mAh battery. The fast refresh rate can make scrolling and supported games feel smoother, while the battery’s stated capacity is the largest here. Its IP66/IP68/IP69 and IP19K ratings also provide a level of stated water and dust resistance that the Moto Edge (2021) lacks and that is more extensive than the Nothing’s IP65 rating.

    That breadth is why I put it first, not because every buyer needs its maximum specifications. At 6.78 inches, it is still a large phone, and the supplied information does not explain how the camera system performs across different lighting conditions or how long the battery lasts in practice. The high refresh rate and processor will matter most to people who play demanding games, multitask heavily or want plenty of headroom. If a compact handset or the S21 Ultra’s long-range zoom and S Pen matter more, those models offer more targeted alternatives.

    Pros:
    • Snapdragon 8 Elite Gen 5 processor with 16GB RAM
    • 512GB storage for large apps, media libraries and offline files
    • 7,300 mAh battery and a 6.78-inch 165 Hz AMOLED display
    • Triple 50MP rear cameras, 5G, wireless charging and extensive stated water and dust resistance
    Cons:
    • Large 6.78-inch format may be awkward for one-handed use
    • The supplied details do not establish real-world battery endurance or camera performance
    • Its advanced display and processor may be more capability than everyday users need

    Best for: Buyers who want a current, unlocked flagship-style phone with high performance, large storage, strong stated durability and a large battery.

    Not ideal for: Anyone who prefers a compact phone, wants confirmed real-world battery or camera results, or does not need the high-end processor and 165 Hz screen.

    • Processor:Snapdragon 8 Elite Gen 5
    • Memory:16GB RAM
    • Storage:512GB
    • Display:6.78-inch AMOLED, 2772 × 1272 pixels
    • Refresh rate:165 Hz
    • Rear cameras:Triple 50MP system
    • Battery:7,300 mAh
    • Connectivity and protection:Unlocked 5G; IP66/IP68/IP69 and IP19K ratings
    Our verdict
    “I recommend the OnePlus 15 as the most balanced flagship-style choice here for buyers who value performance, capacity and durability together.”
  2. Samsung Galaxy S21 Ultra 5G, US Version, 128GB, Phantom Black – Unlocked (Renewed)

    Samsung Galaxy S21 Ultra 5G, US Version, 128GB, Phantom Black - Unlocked (Renewed)

    Best for Zoom and S Pen Support

    View Latest Price

    The Galaxy S21 Ultra is the most specialized premium option in this roundup. Its 6.8-inch AMOLED screen and 120 Hz refresh rate provide a large, smooth viewing area, while the stated 108MP main camera and up to 100x zoom give it a camera specification the other Samsung model here does not match. It also supports the S Pen, which makes it more appealing to buyers who take notes, mark up documents or want a stylus-friendly phone.

    Compared with the OnePlus 15, this is a less modern all-around proposition based on the supplied processor and memory details, which are not provided in this listing. The OnePlus clearly offers more stated RAM and storage, a bigger battery capacity and a newer processor. The S21 Ultra instead earns its place through its combination of zoom capability and S Pen support, features that the OnePlus, S23 FE, Nothing and Moto listings do not claim.

    The limitations are meaningful. This is a renewed phone, so the listing acknowledges that cosmetic imperfections may be present; the battery life is also unspecified. Its 128GB storage is less generous than the OnePlus’s 512GB and the Nothing’s 256GB. I would choose it for its distinctive camera and stylus functions, not as the safest choice for someone seeking the newest hardware, a known battery profile or a new-condition device.

    Pros:
    • 6.8-inch AMOLED display with a 120 Hz refresh rate
    • 108MP main camera with up to 100x zoom listed
    • S Pen support adds note-taking and markup flexibility
    • Unlocked US version with 5G connectivity
    Cons:
    • Renewed condition may include cosmetic imperfections
    • Battery capacity and expected endurance are not specified
    • 128GB storage is less than the OnePlus 15 and Nothing Phone (4a) Pro

    Best for: A buyer who specifically wants a large Samsung screen, long-range zoom features and S Pen support in an unlocked phone.

    Not ideal for: Anyone who wants a new phone, high stated storage, a disclosed battery capacity or the newest processor platform.

    • Display:6.8-inch AMOLED
    • Refresh rate:120 Hz
    • Main camera:108MP
    • Zoom:Up to 100x listed
    • Storage:128GB
    • Connectivity:5G; unlocked US version
    • Condition:Renewed
    • Stylus support:S Pen support
    Our verdict
    “I would pick the renewed S21 Ultra for its zoom and S Pen features, while buyers seeking newer, more balanced hardware should start with the OnePlus 15.”
  3. Nothing Phone (4a) Pro Unlocked Android Smartphone, 12GB RAM, 256GB Storage, Black

    Nothing Phone (4a) Pro Unlocked Android Smartphone, 12GB RAM, 256GB Storage, Black

    Best for Display and Design

    View Latest Price

    The Nothing Phone (4a) Pro brings a polished screen and a flexible camera arrangement to buyers who do not need the most powerful processor in the group. Its 6.83-inch 1.5K AMOLED panel has an adaptive refresh rate up to 144 Hz and a stated peak brightness of 5,000 nits. Those numbers point to a display designed to stay fluid and vivid, while the aluminum unibody and Gorilla Glass 7i give it a more premium material specification than the older renewed Moto Edge.

    Its camera setup is unusually well rounded for this tier: a 50MP main camera with optical image stabilization, a 50MP periscope telephoto and an 8MP ultra-wide. That offers more stated camera variety than the Moto Edge’s 108MP rear camera, whose listing provides no telephoto details. The 5,080 mAh battery and 50W fast charging are also explicitly paired here, unlike the S21 Ultra listing, which does not give a battery capacity.

    There is a clear ceiling, though. The Snapdragon 7 Gen 4 is not the same flagship performance class as the OnePlus 15’s Snapdragon 8 Elite Gen 5, so demanding gaming and sustained heavy workloads point toward OnePlus. Carrier fit is the other major caveat: AT&T and T-Mobile are generally supported, but Verizon is not recommended and bands vary by network. I would make this a strong display-and-camera alternative only after confirming compatibility with the carrier and plan I use.

    Pros:
    • 6.83-inch 1.5K AMOLED display with adaptive refresh up to 144 Hz
    • 50MP stabilized main camera, 50MP periscope telephoto and 8MP ultra-wide
    • Aluminum unibody, Gorilla Glass 7i and IP65 protection
    • 5,080 mAh battery, 50W charging, 12GB RAM and 256GB storage
    Cons:
    • Verizon use is not recommended and carrier band support varies
    • Snapdragon 7 Gen 4 is below the OnePlus 15’s stated flagship processor tier
    • Its large 6.83-inch display may not suit buyers seeking a compact phone

    Best for: Buyers who prioritize a very bright high-refresh AMOLED screen, a versatile camera set and a premium-feeling build, and whose carrier is supported.

    Not ideal for: Verizon users, buyers who need the highest processor tier, or anyone who wants assured network performance without checking band support.

    • Processor:Qualcomm Snapdragon 7 Gen 4
    • Memory and storage:12GB RAM; 256GB storage
    • Display:6.83-inch 1.5K AMOLED
    • Refresh rate and brightness:144 Hz adaptive; up to 5,000 nits peak
    • Rear cameras:50MP main with OIS, 50MP periscope telephoto, 8MP ultra-wide
    • Battery and charging:5,080 mAh; 50W fast charging
    • Software:Nothing OS 4.1 based on Android 16
    • Build and network:Aluminum, Gorilla Glass 7i, IP65; 5G, dual SIM
    Our verdict
    “I recommend the Nothing Phone (4a) Pro to display-focused buyers who have verified carrier support and do not need OnePlus-level processing power.”
  4. Samsung Galaxy S23 FE 5G, 128GB, Graphite, AT&T (Renewed)

    Samsung Galaxy S23 FE 5G, 128GB, Graphite, AT&T (Renewed)

    Best for a Smaller Samsung Screen

    View Latest Price

    The Galaxy S23 FE is the most compact phone in this lineup by its listed screen size, at 6.4 inches. Its 120 Hz OLED panel keeps motion smooth, and the triple rear camera setup includes HDR and slow-motion modes. For buyers who like Samsung’s familiar phone format and want a less expansive display than the 6.8-inch S21 Ultra, this model is easier to narrow down around everyday viewing and handling.

    Against the Nothing Phone (4a) Pro, the S23 FE offers a smaller 120 Hz OLED display, while Nothing provides a larger 144 Hz adaptive panel, more storage and a specified telephoto camera. Compared with the S21 Ultra, the S23 FE gives up the listed 108MP main camera, 100x zoom and S Pen support. Its appeal is instead the more manageable size and 5G, with 8GB of RAM and 128GB of storage.

    The listing’s two caveats shape the decision. First, it is renewed, so a buyer may receive a device with signs of prior use. Second, the model is identified as an AT&T phone, which is a narrower fit than the unlocked OnePlus and S21 Ultra. The supplied details also do not provide battery capacity or a specific processor. This makes it a reasonable Samsung-oriented option for an AT&T customer who prefers a smaller screen, but not the most flexible or fully specified recommendation here.

    Pros:
    • 6.4-inch OLED display with a 120 Hz refresh rate
    • Triple rear cameras with HDR and slow-motion modes
    • 5G connectivity and 8GB RAM
    • Smaller listed display than the S21 Ultra, OnePlus 15 and Nothing Phone (4a) Pro
    Cons:
    • Renewed condition may include signs of prior use
    • AT&T listing is less flexible than the unlocked options
    • 128GB storage; battery capacity and processor are not specified

    Best for: AT&T customers who want a Samsung phone with a 6.4-inch 120 Hz OLED screen and triple rear cameras.

    Not ideal for: Buyers on other carriers, those who want a new-condition phone, more than 128GB of storage or detailed processor and battery specifications.

    • Display:6.4-inch OLED, 1080 × 2340
    • Refresh rate:120 Hz
    • Memory and storage:8GB RAM; 128GB
    • Rear cameras:Triple camera system with HDR and slow-motion modes
    • Video:1080p at 60 fps
    • Connectivity:5G and Wi-Fi; AT&T
    • SIM and security:Dual Nano SIM; fingerprint recognition
    • Condition:Renewed
    Our verdict
    “I would choose the S23 FE for a smaller Samsung experience on AT&T, but the unlocked OnePlus and Nothing models are more flexible options.”
  5. Motorola Moto Edge (2021), 256GB, 8GB RAM, Nebula Blue, Unlocked (Renewed)

    Motorola Moto Edge (2021), 256GB, 8GB RAM, Nebula Blue, Unlocked (Renewed)

    Best for Storage on an Older Platform

    View Latest Price

    The Moto Edge (2021) earns a place for its straightforward combination of 256GB storage, 8GB RAM and a 5,000 mAh battery. Those are useful capacities for keeping apps, photos and downloaded media on the phone, and its unlocked dual-SIM configuration avoids the AT&T restriction attached to the Galaxy S23 FE listing. The 108MP rear camera also sounds substantial on paper, though its listed video capture tops out at 1080p.

    This is the oldest and least convincing flagship recommendation in the group. The OnePlus 15 has twice the RAM, twice the storage and a much newer stated processor platform. The Nothing offers an explicitly described three-camera array with stabilization and periscope zoom, while the Moto listing gives only a single 108MP rear camera specification. The S21 Ultra also matches its main-camera resolution while adding up to 100x zoom and S Pen support.

    The key distinction is that the Moto provides useful basic capacity, but the supplied details do not establish flagship-level performance, camera versatility or durability. It is renewed and not water resistant, and it has no headphone jack. I would treat it as a practical older unlocked handset for someone who values storage and battery capacity over newer display, camera and protection features—not as a peer to the OnePlus 15 in current flagship capability.

    Pros:
    • 256GB storage and 8GB RAM
    • 5,000 mAh battery capacity
    • 108MP rear camera specification
    • Unlocked with dual Nano SIM support
    Cons:
    • Renewed condition means it is pre-owned or refurbished
    • Not water resistant and has no headphone jack
    • 1080p video and limited camera details make it less versatile on paper than newer options

    Best for: A buyer seeking an unlocked renewed Android phone with 256GB storage, 8GB RAM and a 5,000 mAh battery.

    Not ideal for: Anyone seeking current flagship performance, water resistance, advanced multi-camera options, or a new-condition device.

    • Processor:Snapdragon; specific model not stated
    • Memory and storage:8GB RAM; 256GB
    • Rear camera:108MP
    • Video:1080p
    • Battery:5,000 mAh
    • SIM and network:Dual Nano SIM; unlocked
    • Condition:Renewed
    • Durability and audio:Not water resistant; no headphone jack
    Our verdict
    “I would consider the Moto Edge only for its storage and battery capacities, since its age and limited protection make it the weakest flagship fit here.”
best flagship Android smartphones
What makes a great flagship Android smartphone
1
Choose performance and headroom first
If I wanted the strongest performance profile in this comparison, I would begin with the OnePlus 15 .
2
Match the camera setup to your photos
The camera specifications point to different kinds of flexibility.
3
Decide how much screen size and refresh rate matter
The largest listed panels belong to the Nothing Phone (4a) Pro at 6.83 inches and the S21 Ultra at 6.8 inches.
4
Check battery and durability details
The OnePlus lists a 7,300 mAh battery, the largest stated capacity here.
How to choose your flagship Android smartphone
1
How we picked
I ranked these phones according to how well their supplied specifications and listing details meet the expectations behi
2
Choose performance and headroom first
If I wanted the strongest performance profile in this comparison, I would begin with the OnePlus 15 .
3
Match the camera setup to your photos
The camera specifications point to different kinds of flexibility.
4
Decide how much screen size and refresh rate matter
The largest listed panels belong to the Nothing Phone (4a) Pro at 6.83 inches and the S21 Ultra at 6.8 inches.
5
Check battery and durability details
The OnePlus lists a 7,300 mAh battery, the largest stated capacity here.
Vetted flagship Android smartphones ·
The best flagship Android smartphones, compared
★ Winner OnePlus 15 Unlocked Android Sm
Best Overall
5compared
165 Hztop refresh rate
3processors

How We Picked

I ranked these phones according to how well their supplied specifications and listing details meet the expectations behind a flagship Android purchase. I gave the most weight to processor tier, memory and storage, display quality, camera versatility, battery capacity, durability and network flexibility. A large number on one spec sheet does not automatically make a stronger recommendation: I also considered whether the phone’s other details support a balanced daily experience.

The OnePlus 15 leads because it combines the newest stated processor with substantial memory and storage, a large battery, a high-refresh AMOLED screen, a triple-camera system and extensive water and dust resistance ratings. The Samsung models remain relevant for their camera features, displays and S Pen support, but their renewed status changes the ownership proposition. The S23 FE listing adds an AT&T restriction. The Nothing offers a newer display and camera package than the Moto, though its processor tier and carrier caveat limit its appeal as a universal flagship pick.

I used only the product details supplied for this comparison. I did not infer software support length, real-world camera quality, charging speed beyond the stated Nothing specification, or battery endurance from capacity alone. Listing details also do not establish the condition of a particular renewed unit. Buyers should confirm the exact seller terms and carrier compatibility before choosing a device.

Feature comparison
flagship Android smartphoneProcessor
OnePlus 15 Unlocked Android SmSnapdragon 8 Elite Gen 5
Samsung Galaxy S21 Ultra 5G—
Nothing PhoneQualcomm Snapdragon 7 Gen 4
Samsung Galaxy S23 FE 5G—
Motorola Moto EdgeSnapdragon; specific model not stated
Everyday → specialist
Everyday & valuePremium & specialist
Which flagship Android smartphone fits you?
The everyday user
All-round, reliable
The enthusiast
Premium & high-performance
The gift-giver
Looks & craftsmanship

Factors to Consider When Choosing Best Flagship Android Smartphones

I would start by deciding which flagship quality matters most in daily use: speed, cameras, screen, carrier freedom or a smaller form. These five products spread across those priorities, and their listing conditions are as important as their headline specifications.

Choose performance and headroom first

If I wanted the strongest performance profile in this comparison, I would begin with the OnePlus 15. Its Snapdragon 8 Elite Gen 5 processor, 16GB RAM and 512GB storage lead the supplied specs. That combination is most useful for demanding games, extensive multitasking and keeping a large library of apps and media on the phone. The Nothing Phone (4a) Pro has a capable-sounding 12GB RAM and 256GB storage, but its Snapdragon 7 Gen 4 sits below the OnePlus processor tier. The Samsung listings do not provide enough processor detail here for a direct chip comparison.

Buyers who mainly browse, message, stream and take routine photos may not use all of the OnePlus’s performance headroom. In that case, screen size, camera features and carrier fit could matter more than the fastest listed processor. I would avoid treating RAM or processor names alone as a guarantee of real-world speed, since this comparison does not include hands-on performance data.

Match the camera setup to your photos

The camera specifications point to different kinds of flexibility. The Galaxy S21 Ultra is the clearest fit if long-range zoom and S Pen support appeal to me; it lists a 108MP main camera and up to 100x zoom. The Nothing Phone (4a) Pro provides a more explicitly described three-camera arrangement, including optical stabilization and a periscope telephoto, so it is easier to evaluate as a multi-purpose camera system from the information provided. The OnePlus lists three 50MP rear cameras, but not further details about their specific roles.

The Moto Edge also lists a 108MP main camera, but resolution alone does not establish image quality or versatility. It lacks supplied details about extra lenses and records listed video at 1080p. The S23 FE includes triple rear cameras and HDR and slow-motion modes, but this listing does not spell out the lenses or their resolutions. If camera choice is central, I would compare the specific lens functions and sample images available for the exact model rather than ranking by megapixels alone.

Decide how much screen size and refresh rate matter

The largest listed panels belong to the Nothing Phone (4a) Pro at 6.83 inches and the S21 Ultra at 6.8 inches. The OnePlus is close at 6.78 inches. These sizes create more room for video, reading and games, but can make one-handed operation harder. The S23 FE’s 6.4-inch screen is the smallest in this group and may suit buyers who prefer a more compact format, though it is not a small phone by current standards.

For refresh rate, the OnePlus leads at 165 Hz, followed by Nothing at up to 144 Hz, with the two Samsung listings at 120 Hz. Faster refresh rates can make supported motion look smoother, especially while scrolling or gaming. They do not by themselves establish overall display quality, and the supplied specifications do not offer directly comparable brightness or color measurements for every model. I would choose by handling and viewing preference, not by refresh rate alone.

Check battery and durability details

The OnePlus lists a 7,300 mAh battery, the largest stated capacity here. The Moto lists 5,000 mAh and the Nothing 5,080 mAh, with the latter also specifying 50W fast charging. Battery capacity is a useful comparison point, but it cannot tell me exactly how long each phone lasts; screen settings, signal conditions, software and use patterns all affect endurance. The S21 Ultra and S23 FE descriptions do not give battery capacities, so I would seek exact model and seller details before making battery life a deciding factor.

For stated protection, the OnePlus has the broadest water and dust ratings. The Nothing lists IP65, while the Moto is explicitly not water resistant. The supplied S23 FE details say water resistant without a rating. I would treat renewed condition as a separate question: the Samsung and Moto listings are renewed, so inspect the seller’s description and return or replacement terms before relying on a particular unit’s cosmetic state or battery condition.

Verify carrier support and listing condition

An unlocked label is helpful, but it does not prove support for every band or feature on every carrier. The OnePlus is described as unlocked for all carriers, and the S21 Ultra is an unlocked US version. The Nothing listing says AT&T and T-Mobile are generally supported, advises against Verizon use and notes that bands vary. The S23 FE is specifically an AT&T listing. The Moto is unlocked, but I would still confirm its network bands and activation compatibility with the carrier I plan to use.

Condition affects the comparison too. The renewed Galaxy S21 Ultra, Galaxy S23 FE and Moto Edge are not new-condition listings. The OnePlus and Nothing descriptions do not identify them as renewed. Before buying, I would verify exactly what the seller means by condition, which accessories are included, whether the phone is locked or blacklisted, and what return or replacement coverage applies. Those checks matter more for a specific renewed unit than its original model specifications.

Frequently Asked Questions

Which phone is the strongest all-around flagship choice in this comparison?

I would choose the OnePlus 15 for the strongest overall mix of stated specifications. It pairs a Snapdragon 8 Elite Gen 5 processor with 16GB RAM, 512GB storage, a 7,300 mAh battery, a high-refresh AMOLED display, triple rear cameras and extensive water and dust resistance ratings. Buyers who prioritize S Pen support and zoom may prefer the renewed S21 Ultra, while the OnePlus is the more balanced pick across performance, capacity and durability on paper.

Which option is best for zoom photography?

The Galaxy S21 Ultra is the clearest zoom-focused option because its listing specifies up to 100x zoom and also includes S Pen support. The Nothing Phone (4a) Pro has a 50MP periscope telephoto camera, but the product details do not state a comparable zoom range. I would treat the S21 Ultra’s zoom figure as a listed capability rather than a promise about image quality at every zoom level, and remember that this particular listing is renewed.

Is the Nothing Phone (4a) Pro suitable for Verizon?

The supplied listing says Verizon use is not recommended and warns that carrier band support varies. It identifies AT&T and T-Mobile as generally supported, but that does not guarantee every feature or full network performance for a specific plan. I would confirm compatibility directly with the carrier before choosing the Nothing phone, especially if Verizon is my provider.

What should I check before buying one of the renewed phones?

I would check the seller’s exact condition description, return and replacement terms, included accessories, network lock status and compatibility with my carrier. The Moto Edge, Galaxy S21 Ultra and Galaxy S23 FE are listed as renewed, and a general renewed label does not reveal the condition or battery health of an individual unit. The S23 FE listing is also tied to AT&T, so carrier eligibility deserves particular attention.

Which phone is the best fit for someone who wants a smaller screen?

The Galaxy S23 FE has the smallest stated screen in this group at 6.4 inches, compared with panels ranging from 6.78 to 6.83 inches on the OnePlus, S21 Ultra and Nothing. It also has a 120 Hz OLED display and triple rear cameras. I would choose it for a more manageable Samsung format if I use AT&T and accept a renewed listing; buyers who need an unlocked option should look at the OnePlus or check the Nothing’s carrier support.

Conclusion

For the broadest blend of current performance, storage, battery capacity and stated durability, I recommend the OnePlus 15. Choose the Galaxy S21 Ultra if zoom features and S Pen support are the main draw and a renewed phone is acceptable. The Nothing Phone (4a) Pro is the better match for a bright, high-refresh screen and a versatile listed camera array, provided the carrier is compatible. For an AT&T buyer who prefers a smaller Samsung screen, the Galaxy S23 FE is the targeted pick. I would consider the Moto Edge (2021) only if its storage, battery capacity and unlocked status matter more than newer flagship performance, camera detail and water resistance.

FALL

Fall Picks

As an affiliate, we earn on qualifying purchases.

You May Also Like

15 Best DVRs in 2026

Discover the top DVRs of 2026, from the best overall to budget options. Find the perfect security recorder tailored to your needs today.

14 Best Premium Backpacking Sleeping Bags for Ultra-Comfort and Warmth

Discover the best premium backpacking sleeping bags for 2026. Find top picks for warmth, weight, durability, and versatility tailored for serious backpackers.

10 Best Bias Lighting for Monitor in 2026 That Enhances Your Setup

Discover the top bias lighting options for monitors in 2026. Find the best overall, budget picks, and premium choices to enhance your viewing experience.

15 Best Wheelchair Ramps for Home Use in 2026

Discover the 15 best wheelchair ramps for home use in 2026 to ensure safety, durability, and ease of access—continue reading to find your perfect match.