Last Updated & Fact Checked: April 19, 2026
Are you trying to decide between the Samsung Galaxy A21 and the Samsung Galaxy A51?
Product Versus will provide you with all the product details so you can quickly compare the facts to find which product is right for you – the Samsung Galaxy A21 or the Samsung Galaxy A51 – and find out exactly what the differences are.
Both the Samsung Galaxy A21 and the Samsung Galaxy A51 are quality products, so read on to find out which one is best for your needs!
Samsung Galaxy A21 quick facts
Samsung Galaxy A51 quick facts
Samsung Galaxy A21 product details
Bestseller No. 1
Samsung Galaxy A21 GSM Unlocked Android Cell Phone, US Version Smartphone, 32GB Storage, Long-Lasting Battery, 6.5” Infinity Display, Quad Camera, Black (Renewed)
- Amazon Renewed Condition: May has few minor scuffs or scratched, NO cosmetic damages on it, the item may have signs of handling such as minor scratches or minor marks.
- This device is GSM unlocked and will work with T-Mobile, Sprint, AT&T, Not compatible with Cricket and any other CDMA network. To ensure this phone will work with your carrier please check to make sure the frequencies your carrier uses are supported by this phone.
- Clean IMEI. Ships in non-original box with premium aftermarket charger and USB cable. NO any other accessory!
Bestseller No. 2
Samsung Galaxy A21 32GB 6.5 inches Quad Camera A215 GSM Unlocked Black Single SIM (Renewed)
- This device is GSM unlocked and will work with all major Canadian carriers. Not compatible with, Any CDMA network like Sprint, Verizon, Virgin Mobile US or Boost, USCellular. Network bands in regions may be different depending on the mobile operator and your location. Available storage is less and subject to change due to device software updates and apps usage.
- Camera description, Front
- Operating system, android
- Package Weight, 1.0 pounds
Bestseller No. 3
SAMSUNG Galaxy A21 LTE Verizon | 6.5" Screen | 32GB of Storage | Long Lasting Battery | Single SIM | 2020 Model | US Version | Black - (SM-A215UZKAVZW) (Renewed)
- CHARGE UP. POWER THROUGH: Spend more time scrolling, texting and sharing, and less time looking for an outlet to charge. This long-lasting battery has the power to keep up with you.
- BIG SCREEN TO GET MORE DONE: Keep in touch with friends, family and the news with plenty of room on a crystal clear 6.5" edge-to-edge display.
- A LENS FOR YOUR FAVORITE ANGLE: Capture shareable portraits, wide shots and videos with this versatile triple lens camera.
- STORE MORE: Keep all your photos and apps without worrying about storage. And get up to 512GB of storage with a microSD card.
- Operating system: Android
Samsung Galaxy A51 product details
Bestseller No. 1
Samsung Galaxy A51 128GB 6.5" 4G LTE Unlocked, Black (Renewed)
- Item Package Dimension- 7.4015747956L X 3.93700787W X 2.0078740137H Inches
- Item Package Weight - 0.84657508608 Pounds
- Item Package Quantity - 1
- Product Type - Cellular Phone
Bestseller No. 2
SAMSUNG Galaxy A51 128GB (6.5 inch) Display Quad Camera 48MP A515U Black Unlocked (Renewed), A51 128GB A515U
- Ships in non-retail box; generic charger and USB Cable only.
- No any other accessories included.
- This device is GSM unlocked. GSM Compatible, Not compatible with : Any CDMA network like : Verizon, Virgin Mobile US or Boost. Network bands in regions may be different depending on the mobile operator and your location. Available storage is less and subject to change due to device software updates and apps usage.
- it's only support Wi-fi calling for Sprint. Not other carrier.
Bestseller No. 3
Samsung Galaxy A51 5G | A516U | 128GB | Single SIM | GSM Unlocked | Android Smartphone | Black (Renewed)
- This device is GSM unlocked and will work with T-Mobile, AT&T, Not compatible with Cricket and any other CDMA network.
- Refurbished Condition May have minor scuffs or scratches;
- Refurbished Condition May have minor scuffs or scratches;, Ships in non-retail box; generic charger and USB Cable only. No any other accessories included
- Clean IMEI. 90 days store warranty,
- this model: Not compatible with Cricket and Verizon
New products & alternatives to the Samsung Galaxy A21 and the Samsung Galaxy A51
New
Samsung Galaxy A16 5G SM-A166U | 128GB | AT&T Locked |Android Smartphone, Large AMOLED Display, Durable Design, Expandable Storage, US Version | Blue Black (Renewed)
- Fast speeds and seamless video calls
- All-day power with efficient energy use
- Sharp, vibrant photos with enhanced detail
- Smooth app usage and plenty of space for media
- Clear visuals for streaming, gaming, and browsing
New
Samsung Galaxy A16 5G A Series Cell Phone, Unlocked Android Smartphone, Large AMOLED Display, Durable Design, Super Fast Charging, Expandable Storage, US Version, 2025, Blue Black (Renewed)
- Charger NOT Included, 6.7" Super AMOLED FHD+, 90Hz Refresh Rate, 385 ppi, 800 nits (HBM), 1080x2340px, 5000mAh Battery
- 128GB, 4GB RAM, microSDXC, Exynos 1330 (5nm), Octa-Core, Mali-G68 MP2 or Mali-G57 MC2 GPU
- Rear Camera: 50MP, f/1.8 (wide) + 5MP, f/2.2 (ultrawide) + 2MP, f/2.4 (macro), LED flash, panorama, HDR; Front Camera: 13MP, f/2.0, Android 14, up to 6 major Android upgrades, One UI 6.1
- 3G: HSDPA 850/900/1700(AWS)/1900/2100; 4G LTE: 1/2/3/4/5/7/12/13/14/20/25/26/28/29/30/38/39/40/41/48/66/71, 5G: 2/5/25/41/66/71/77/78 SA/NSA/Sub6/mmWave - Nano-SIM + eSIM
- US Model – Global Connectivity – Compatible with Most GSM Carriers like T-Mobile, AT&T, MetroPCS, etc. Will Also work with CDMA Carriers Such as Verizon, Straight Talk.
New
Samsung Galaxy A36 5G A Series, 128GB Unlocked Android Smartphone, AMOLED Display, Rugged Design, 5G Connectivity, Affordable Performance, US Version, 2025, US 1 Yr Warranty, Awesome Lavender
- AFFORDABLY AWESOME AND ALWAYS RELIABLE: Galaxy A36 5G offers premium features and smart extras designed to elevate your everyday life — all at a price that brings exceptional value.
- AWESOME SCREEN, ENDLESS POSSIBILITIES: Elevate your content no matter where you are with the 6.7” display of Galaxy A36.¹ Whether you're gaming, streaming or browsing, enjoy massive detail and stunning clarity.
- FIND AWESOME FAST: What’s your favorite influencer wearing? Where’d they go on vacation? What’s that word mean? Don’t try to describe it — use Circle to Search with Google and get the answer in a snap.² With Galaxy A36 5G, simply circle it on your screen.
- PRO SHOTS, NO PROBLEM: From family photos to dinner with friends, the enhanced front-facing camera on Galaxy A36 5G makes every selfie look like it came straight from a photo shoot.
- SEE FAMILY MOMENTS IN A WHOLE NEW LIGHT: Your family’s special moments just got brighter with Galaxy A36 5G. With effortless Nightography, you can capture clear, high-quality photos and videos automatically without adjusting manual settings.
Our conclusion on the Samsung Galaxy A21 vs Samsung Galaxy A51
Both the Samsung Galaxy A21 and the Samsung Galaxy A51 are high quality products and we are sure you will be happy with either one. In the end it comes down to your budget and the value for money you are looking for.
Either way, the Samsung Galaxy A21 and the Samsung Galaxy A51 are both excellent products that will more than do their job!