Samsung Galaxy Note 9 vs Samsung Galaxy S21 Ultra

Last Updated & Fact Checked:  March 22, 2026

Are you trying to decide between the Samsung Galaxy Note 9 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 Note 9 or the Samsung Galaxy S21 Ultra – and find out exactly what the differences are.

Both the Samsung Galaxy Note 9 and the Samsung Galaxy S21 Ultra are quality products, so read on to find out which one is best for your needs!

Samsung Galaxy Note 9 quick facts

Samsung Galaxy S21 Ultra quick facts

Samsung Galaxy Note 9 product details

Bestseller No. 1
Samsung Galaxy Note 9, 128GB, Ocean Blue - Unlocked (Renewed)
  • This phone is unlocked and compatible with any carrier of choice on GSM and CDMA networks (e.g. AT&T, T-Mobile, Sprint, Verizon, US Cellular, Cricket, Metro, Tracfone, Mint Mobile, etc.).
  • Tested for battery health and guaranteed to have a minimum battery capacity of 80%.
  • Successfully passed a full diagnostic test which ensures like-new functionality and removal of any prior-user personal information.
  • The device does not come with headphones or a SIM card. It includes either a generic or original charger and charging cable.
  • Inspected and guaranteed to have minimal cosmetic damage, which is not noticeable when the device is held at arm's length.
Bestseller No. 2
Samsung Galaxy Note 9, 128GB, Lavender Purple - Unlocked (Renewed)
  • This phone is unlocked and compatible with any carrier of choice on GSM and CDMA networks (e.g. AT&T, T-Mobile, Sprint, Verizon, US Cellular, Cricket, Metro, Tracfone, Mint Mobile, etc.).
  • Tested for battery health and guaranteed to have a minimum battery capacity of 80%.
  • Successfully passed a full diagnostic test which ensures like-new functionality and removal of any prior-user personal information.
  • The device does not come with headphones or a SIM card. It includes either a generic or original charger and charging cable.
  • Inspected and guaranteed to have minimal cosmetic damage, which is not noticeable when the device is held at arm's length.
Bestseller No. 3
Samsung Galaxy Note 9, 128GB, Midnight Black - Unlocked (Renewed)
  • This phone is unlocked and compatible with any carrier of choice on GSM and CDMA networks (e.g. AT&T, T-Mobile, Sprint, Verizon, US Cellular, Cricket, Metro, Tracfone, Mint Mobile, etc.).
  • Tested for battery health and guaranteed to have a minimum battery capacity of 80%.
  • Successfully passed a full diagnostic test which ensures like-new functionality and removal of any prior-user personal information.
  • The device does not come with headphones or a SIM card. It includes either a generic or original charger and charging cable.
  • Inspected and guaranteed to have minimal cosmetic damage, which is not noticeable when the device is held at arm's length.

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 Note 9 and the Samsung Galaxy S21 Ultra

New
Samsung Galaxy A26 5G (256GB + 8GB) International Model SM-A266M/DS Factory Unlocked 6.7" Dual Sim 50MP Triple Cam (256GB SD Card Bundle) (Black)
  • 5G Bands: 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6, 4G LTE Bands: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 32, 38, 40, 41, 66
  • Display: Super AMOLED, 120Hz | 6.7 inches, 110.2 cm2 (~86.7% screen-to-body ratio) | 1080 x 2340 pixels, 19.5:9 ratio (~385 ppi density) | Corning Gorilla Glass Victus+ | Always-on display
  • Camera: 50 MP, f/1.8, 27mm (wide), 1/2.76", 0.64µm, PDAF, OIS | 8 MP, f/2.2, 120˚ (ultrawide), 1/4.0", 1.12µm | 2 MP, f/2.4, (macro)
  • Battery: Li-Po 5000 mAh, non-removable | 25W wired
  • Please note, this device does not support E-SIM. This device is compatible with Verizon, AT&T, and their MVNO's(Spectrum, Cricket, Xfinity, H2O, Visible, etc.). This device is NOT compatible with T-Mobile and its MVNO's(Metro, Ultra, Mint, etc.). Please contact the seller for more information about carrier compatibility. A power adapter is NOT included.
New
Samsung Galaxy S25 FE Cell Phone (2025), 128GB AI Smartphone, Unlocked Android, Large Display, 4900mAh Battery, High Res-Camera, AI Photo Edits, Durable, US 1 Yr Warranty, White
  • BIG. BRIGHT. SMOOTH : Enjoy every scroll, swipe and stream on a stunning 6.7” wide display that’s as smooth for scrolling as it is immersive.¹
  • LIGHTWEIGHT DESIGN, EVERYDAY EASE: With a lightweight build and slim profile, Galaxy S25 FE is made for life on the go. It is powerful and portable and won't weigh you down no matter where your day takes you.
  • SELFIES THAT STUN: Every selfie’s a standout with Galaxy S25 FE. Snap sharp shots and vivid videos thanks to the 12MP selfie camera with ProVisual Engine.
  • MOVE IT. REMOVE IT. IMPROVE IT: Generative Edit² on Galaxy S25 FE lets you move, resize and erase distracting elements in your shot. Galaxy AI intuitively recreates every detail so each shot looks exactly the way you envisioned.³
  • MORE POWER. LESS PLUGGING IN⁵: Busy day? No worries. Galaxy S25 FE is built with a powerful 4,900mAh battery that’s ready to go the distance⁴. And when you need a top off, Super Fast Charging 2.0⁵ gets you back in action.
New
SAMSUNG Galaxy A16 4G Dual SIM (128GB, 2025) 6.7" 90Hz AMOLED, Splash Resistant, 8Core, 50MP Camera (Factory Unlocked International Model for GSM, Global) A165M/DS (25W Fast Charger Bundle, Black)
  • Please note, this device does not support E-SIM; This 4G model is compatible with all GSM networks worldwide outside of the U.S. In the US, ONLY compatible with T-Mobile and their MVNO's (Metro and Standup). It will NOT work with Verizon, Spectrum, AT&T, Total Wireless, or other CDMA carriers.
  • 4G LTE Bands: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40, 41, 66
  • Display: Super AMOLED, 90Hz, 800 nits (HBM) | 6.7 inches, 110.2 cm2 (~86.0% screen-to-body ratio) | 1080 x 2340 pixels, 19.5:9 ratio (~385 ppi density)
  • Camera: 50 MP, f/1.8, (wide), 1/2.76", 0.64µm, AF | 50 MP, f/1.8, (wide), 1/2.76", 0.64µm, AF | 2 MP, f/2.4, (macro)
  • Battery: 5000 mAh, non-removable | 25W wired
New
SAMSUNG Galaxy A16 4G LTE (128GB + 4GB) International Model SM-A165F/DS Factory Unlocked 6.7" Dual Sim 50MP Dual Cam (Case Bundle) (Light Green)
  • 4G LTE Bands: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40, 41, 66
  • Display: Super AMOLED, 90Hz, 800 nits (HBM) | 6.7 inches, 110.2 cm2 (~86.0% screen-to-body ratio) | 1080 x 2340 pixels, 19.5:9 ratio (~385 ppi density)
  • Camera: 50 MP, f/1.8, (wide), 1/2.76", 0.64µm, AF | 50 MP, f/1.8, (wide), 1/2.76", 0.64µm, AF | 2 MP, f/2.4, (macro)
  • Battery: 5000 mAh, non-removable | 25W wired
  • Please note, this device does not support E-SIM. This 4G model is compatible with all GSM networks worldwide outside of the U.S. In the US, only compatible with T-Mobile and their MVNO's (Metro and Standup). Please contact the seller for more information about carrier compatibility. A power adapter is NOT included.
New
SAMSUNG Galaxy A16 5G Dual SIM (128GB, 2025) 6.7" 90Hz AMOLED, Water Resistant, 8Core, 50MP Camera (Factory Unlocked International Model for GSM, Global) A166M/DS Blue Black
  • 5G Bands: 1, 3, 7, 8, 20, 28, 38, 40, 41, 77, 78 SA/NSA/Sub6 | 4G LTE Bands: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40, 41, 66
  • Display: Super AMOLED, 90Hz, 800 nits (HBM) | 6.7 inches, 110.2 cm2 (~86.0% screen-to-body ratio) | 1080 x 2340 pixels, 19.5:9 ratio (~385 ppi density)
  • Camera: 50 MP, f/1.8, (wide), 1/2.76", 0.64µm, AF | 50 MP, f/1.8, (wide), 1/2.76", 0.64µm, AF | 2 MP, f/2.4, (macro)
  • Battery: 5000 mAh, non-removable
  • International Model – Global Connectivity – Plug & Play with an active SIM on AT&T, Verizon, T-Mobile, and most U.S. carriers. New activations are only supported on T-Mobile in the U.S., as most carriers may not recognize International IMEI's as compatible. (No U.S. manufacturer warranty; Seller return policy applies.).Please note, this device does not support E-SIM. This device is compatible with T-Mobile, Verizon, AT&T, and their MVNO's(Metro, Mint, Ultra, H2O, Visible, etc.). This device is NOT compatible with the following MVNO's: Cricket, Spectrum, and Xfinity. Please contact the seller for more information about carrier compatibility.

Our conclusion on the Samsung Galaxy Note 9 vs Samsung Galaxy S21 Ultra

Both the Samsung Galaxy Note 9 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 Note 9 and the Samsung Galaxy S21 Ultra are both excellent products that will more than do their job!