Last Updated & Fact Checked: April 18, 2026
Are you trying to decide between the Samsung Galaxy S20 Ultra and the Samsung Galaxy S21 Ultra?
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 S20 Ultra or the Samsung Galaxy S21 Ultra – and find out exactly what the differences are.
Both the Samsung Galaxy S20 Ultra and the Samsung Galaxy S21 Ultra are quality products, so read on to find out which one is best for your needs!
Samsung Galaxy S20 Ultra quick facts
Samsung Galaxy S21 Ultra quick facts
Samsung Galaxy S20 Ultra product details
Bestseller No. 1
Samsung Galaxy S20 Ultra, 128GB, Cosmic Black - Fully Unlocked (Renewed)
- 2G: GSM850, SM900, CS1800, CS1900, CDMA800,USPCS1900, 3G: B1(2100), 2(1900), 4(AWS), 5(850), 8(900), BC0(800),BC1(1900),BC10(800), B34(2010),B39(1880), 4G LTE: B1(2100), 2(1900), 3(1800), 4(AWS), 5(850), 7(2600), 8(900), 12(700), 13(700), 14(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 29(700), 30(2300), B38(2600), 39(1900), 40(2300), 41(2500), 46(5200), 48(3600), 66(AWS-3), 71(600) (ensure to check compatibility with your carrier before purchase)
- 6.9 , Dynamic AMOLED 2X, 3200 x 1440 (Quad HD plus), Color Depth: 16M, 5000mAh Battery
- 128GB Storage, 12GB RAM, Qualcomm SM8250 Snapdragon 865 (7 nm plus), Octa-Core 2.8GHz,2.4GHz,1.8GHz, Adreno 650
- Rear Camera: 108MP, f/1.8 plus 12MP, f/2.2 plus 48MP, f/3.5 plus 0.3MP(VGA), f/1.0, Front Camera: 40 MP, f/2.2
- Fully Unlocked Version. Compatible with Most GSM and CDMA Carriers like T-Mobile, AT andT, MetroPCS, etc. Will Also work with CDMA Carriers Such as Verizon, Sprint.
Bestseller No. 2
Samsung Galaxy S20 Ultra, 128GB, Cosmic Gray - Fully Unlocked (Renewed)
- Camera description, Front
- Wireless communication technology, Cellular
- Product Type - CELLULAR PHONE
Bestseller No. 3
Samsung Galaxy S20+ 5G, US Version, 128GB - Unlocked (Renewed)
- The Samsung Galaxy S20+ has a large 6.7-inch Dynamic AMOLED 2X display with HDR10+ support, delivering rich contrast and true-to-life colors, perfect for immersive media consumption.
- Its camera setup includes a 64MP telephoto lens with 3x hybrid zoom and up to 30x Super Resolution Zoom, along with a DepthVision sensor that enhances portrait mode and enables advanced AR effects.
- The phone supports 5G connectivity, Wi-Fi 6, and ultra-low latency networking, making it ideal for cloud gaming, streaming, and fast file transfers.
- It features stereo speakers tuned by AKG and Dolby Atmos support, providing a cinematic audio experience without headphones.
- The Galaxy S20+ also has an ultrasonic in-display fingerprint sensor, IP68 water and dust resistance, and Samsung DeX support, allowing you to connect the phone to a monitor for a desktop-like productivity setup.
Samsung Galaxy S21 Ultra product details
Bestseller No. 1
Samsung Galaxy S21 Ultra 5G, US Version, 128GB, Phantom Black - Unlocked (Renewed)
- The Samsung Galaxy S21 Ultra (Renewed) is a premium smartphone with a 6.8-inch AMOLED display, 120Hz refresh rate, and powerful camera system featuring a 108MP main lens and up to 100x zoom. It supports the S Pen, offers strong performance with 5G connectivity, and is ideal for users seeking flagship features at a better value.
Bestseller No. 2
Samsung Galaxy S21 Ultra 5G, US Version, 256GB, Phantom Black - Unlocked (Renewed)
- The Galaxy S21 Ultra features a massive 6.8-inch Dynamic AMOLED 2X display with Quad HD+ resolution, HDR10+ support, and an adaptive 120Hz refresh rate that scales dynamically to deliver ultra-smooth visuals while conserving battery life.
- Its rear camera system is a powerhouse, combining a 108MP wide sensor, 12MP ultra-wide lens, and two telephoto lenses (10MP each) with 3x and 10x optical zoom. With up to 100x Space Zoom, advanced AI scene optimization, and laser autofocus, the S21 Ultra captures extraordinary detail, whether shooting landscapes, zoomed-in subjects, or 8K video content.
- The phone is powered by Snapdragon 888 (U.S.) or Exynos 2100 (global) paired with up to 16GB of RAM, making it exceptionally fast for gaming, multitasking, and demanding productivity apps. Coupled with Samsung DeX support, the Ultra can be used like a full desktop workstation for editing, presentations, and professional workflows.
- The Galaxy S21 Ultra offers a 5,000 mAh intelligent adaptive battery with fast wired charging, fast wireless charging, and reverse wireless charging. Its AI-driven battery management optimizes power use based on your habits, allowing longer usage without frequent recharging—even with heavy multitasking or 5G connectivity.
- Security and connectivity are top-tier, featuring Samsung Knox Vault for advanced protection of sensitive data, ultrasonic in-display fingerprint scanning, facial recognition, and ultra-fast 5G and Wi-Fi 6E support. Enhanced stereo speakers with Dolby Atmos create immersive audio, making the device ideal for gaming, streaming, and professional multimedia experiences.
Bestseller No. 3
Samsung Electronics Samsung Galaxy S21 Ultra 5G | Factory Unlocked Android Cell Phone | US Version 5G Smartphone | Pro-Grade Camera, 108MP High Res | 128GB, Black (SM-G998UZKAXAA) (Renewed)
- Item Package Dimension- 6.9299999929314L X 5.6299999942574W X 1.3399999986332H Inches
- Item Package Weight - 0.78925489796 Pounds
- Item Package Quantity - 1
- Product Type - Cellular Phone
New products & alternatives to the Samsung Galaxy S20 Ultra and the Samsung Galaxy S21 Ultra
New
Samsung Galaxy S25 Ultra Cell Phone, 256GB AI Smartphone, Unlocked Android, AI Camera, Fast Processor, Long Battery Life, 2025, Titanium Gray (Renewed)
- 6.9" Dynamic LTPO AMOLED 2X QHD+, 120Hz Adaptive Refresh Rate, HDR10+, 1440x3120px, Android 15, One UI 7, up to 7 major Android upgrades 256GB, 12GB RAM, No SD Card Slot, Qualcomm Snapdragon 8 Elite (3nm), Octa-Core, Adreno 830 GPU, 5000mAh Battery Rear Camera: 200MP, f/1.7, wide + 10MP, f/2.4, telephoto + 50MP, f/3.4, periscope telephoto + 50MP, f/1.9, ultrawide, Front Camera: 12MP, f/2.2, wide Global 4G LTE, 5G: N1/2/5/7/25/28/41/66/71/77/78/257/258/260/261 SA/NSA/Sub6/mmWave - Nano-SIM + eSIM + eSIM (max 2 at a time) US Model (Fully Unlocked): Compatible with Most GSM and CDMA Carriers like T-Mobile, AT&T, etc. Will Also work with CDMA Carriers Such as Verizon.
New
Samsung Galaxy S25 Ultra 5G | 256GB, Dual SIM | 6.9" AMOLED 2X, 200MP Camera | International Model Factory Unlocked for T-Mobile, Verizon & Global S938B/DS | 25W Charger Bundle (Titanium Black)
- 6.9" Dynamic LTPO AMOLED 2X QHD+, 120Hz Adaptive Refresh Rate, HDR10+, 1440x3120px, Android 15, One UI 7, up to 7 major Android upgrades
- 256GB, 12GB RAM, No SD Card Slot, Qualcomm Snapdragon 8 Elite (3nm), Octa-Core, Adreno 830 GPU, 5000mAh Battery
- Rear Camera: 200MP, f/1.7, wide + 10MP, f/2.4, telephoto + 50MP, f/3.4, periscope telephoto + 50MP, f/1.9, ultrawide, Front Camera: 12MP, f/2.2, wide
- 2G: 850/900/1800/1900, 3G: UMTS 1(2100)/2(1900)/4(AWS)/5(850)/8(900), 4G LTE: 1/2/3/4/5/7/8/12/13/17/18/19/20/25/26/28/32/38/39/40/41/66, 5G: N1/2/3/5/7/8/12/20/25/26/28/38/40/41/66/75/77/78 SA/NSA/Sub6 - Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
- International Model – Global Connectivity – Plug & Play with an active SIM on AT&T, Verizon, T-Mobile, and most U.S. carriers. New activations are Also supported on T-Mobile, Verizon ONLY in the U.S., as some carriers may not recognize International IMEI's as Compatible. (No U.S. manufacturer warranty; Seller Return policy applies.)
New
SAMSUNG Galaxy S25 Ultra 5G 2025 (International Version) | GSM Unlocked (T-Mobile) | 512GB Storage + 12GB RAM SM-S938B Qualcomm Snapdragon 8 Elite Android 15 Smartphone (Titanium Black)
- This phone is Unlocked for GSM Carriers in USA like T-Mobile (Excluding Verizon, Sprint, and US Cellular) and not compatible with any CDMA Network Carriers. Dual-SIM (2x Nano-SIM + or Nano-SIM + eSIM or Dual eSIM)
- Samsung Regional Lock will be unlocked. This process requires unsealing the unit prior to shipping.
- 6.9" full rectangle, Dynamic AMOLED 2X, 3120 x 1440 (Quad HD+), 120 Hz, 16M Color Depth, Corning Glass Victus 2
- 512GB UFS 4.0 Storage, 12GB RAM
- Qualcomm Snapdragon 8 Elite
New
Samsung Galaxy S25 Ultra, 256GB Smartphone, Unlocked Android, AI Night Mode Camera, Snapdragon 8 Elite Fast Processor, 5000mAh Battery, Built-in S Pen, 2025, US 1 Yr Warranty, Titanium Gray
- MULTIPLE TASKS WITH ONE ASK: Streamline your day with an assistant that gets you. Ask it to Google search for a pet-friendly vegan restaurant nearby and text it to your friend— your Galaxy S25 Ultra handles multiple tasks with a single ask.¹
- START THE DAY SMARTER: Stay one step ahead with a phone that gives you the info you need before you even know you need it with Now Brief.²
- REDUCE THE NOISE. REVEAL THE MAGIC: AI Camera with Audio Eraser lets you capture vibrant videos in low light and minimize unwanted noises so you can relive your favorite moments with fewer distractions.³
- BRING OUT THE BEST IN EVERY FACE: Capture every portrait with clarity and confidence on the Galaxy S25 Ultra. The advanced portrait features adjust skin tones and preserve natural textures, giving every shot a polished, professional look.
- SWITCHING IS QUICK & EASY: With Smart Switch, you can move your pics, videos, music, apps, contacts and convos to their new home, safely and securely, in just a few simple steps.
Our conclusion on the Samsung Galaxy S20 Ultra vs Samsung Galaxy S21 Ultra
Both the Samsung Galaxy S20 Ultra and the Samsung Galaxy S21 Ultra 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 S20 Ultra and the Samsung Galaxy S21 Ultra are both excellent products that will more than do their job!