Last Updated & Fact Checked: March 15, 2026
Are you trying to decide between the Samsung Galaxy S21 Plus 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 S21 Plus or the Samsung Galaxy S21 Ultra – and find out exactly what the differences are.
Both the Samsung Galaxy S21 Plus and the Samsung Galaxy S21 Ultra are quality products, so read on to find out which one is best for your needs!
Samsung Galaxy S21 Plus quick facts
Samsung Galaxy S21 Ultra quick facts
Samsung Galaxy S21 Plus product details
Bestseller No. 1
Samsung Galaxy S21+ 5G, US Version, 128GB, Phantom 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.).
- When You Receive The Phone, Insert A Sim Card From A Compatible Carrier. Then, Turn It On, Connect To Wi-Fi, And Follow The On Screen Prompts To Activate Service.
- The Device Does Not Come With Headphones Or A Sim Card. It Does Include A Charger And Charging Cable That May Be Generic.
- Tested For Battery Health And Assured To Have A Minimum Battery Capacity Of 80%.
Bestseller No. 2
Samsung Galaxy S21+ Plus 5G, US Version, 128GB, Phantom Silver - Unlocked (Renewed)
- Product Type -Cellular Phone
- Package Quantity-1
- Package Dimension-6.9299999929314 inchesL X 3.6599999962668 inchesW X 1.4599999985108 inchesH
- Package Weight -0.76941329438 Lbs
Bestseller No. 3
Samsung Galaxy S21+ Plus 5G, US Version, 128GB, Phantom Violet - 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.).
- Please check with your carrier to verify compatibility.
- When you receive the phone, insert a SIM card from a compatible carrier. Then, turn it on, connect to Wi-Fi, and follow the on screen prompts to activate service.
- The device does not come with headphones or a SIM card. It does include a charger and charging cable that may be generic.
- Tested for battery health and guaranteed to have a minimum battery capacity of 80%.
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 S21 Plus and the Samsung Galaxy S21 Ultra
New
Samsung Galaxy S21+ 5G, US Version, 256GB, Phantom Black - Verizon Locked (Renewed)
- This device is only compatible with the Verizon network.
New
SAMSUNG Galaxy A56 5G Ai (for Tmobile Mint Tello & Global) (128GB + 8GB) Version Latina Unlocked SM-A566E/DS 6.6" 120Hz 50MP Triple (Awesome Pink SM-A566ELIATPA)
- USA Market Only Works on Tmobile / Mint / Metro PCS . OUTISIDE USA Unlocked Worldwide GSM 5G + 4G LTE PHONE
- LATIN VERSION ***** AMERICAN + LATIN BANDS Octa-core CPU Speed 2.9GHz, 2.6GHz, 1.9GHz CPU Type Octa-Core
- Rear Camera - Resolution (Multiple) 50.0 MP + 12.0 MP + 5.0 MP Rear Camera - F Number (Multiple) F1.8 , F2.2 , F2.4 Rear Camera - Auto Focus Yes Rear Camera - OIS Yes Rear Camera Zoom Digital Zoom up to 10x / Front Camera - Resolution 12.0 MP Front Camera - F Number F2.2 Video Recording Resolution UHD 4K (3840 x 2160) @30fps
- SIM 1 + SIM 2 / SIM 1 + eSIM / Dual eSIM LTE 5G FDD Sub6 N1(2100), N3(1800), N5(850), N7(2600), N8(900), N20(800), N28(700), N66(AWS-3) 5G TDD Sub6 N38(2600), N40(2300), N41(2500), N78(3500) 4G FDD LTE B1(2100), B3(1800), B5(850), B7(2600), B8(900), B20(800), B28(700) 4G TDD LTE B38(2600), B40(2300), B41(2500) / 3G Quad Band / 2G Quad Band
- Size (Main_Display) 170.1mm (6.7" full rectangle) / 165.5mm (6.5" rounded corners) Resolution (Main Display) 1080 x 2340 (FHD+)Technology (Main Display) Super AMOLED Colour Depth (Main Display) 16M Max Refresh Rate (Main Display) 120 Hz
Our conclusion on the Samsung Galaxy S21 Plus vs Samsung Galaxy S21 Ultra
Both the Samsung Galaxy S21 Plus 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 S21 Plus and the Samsung Galaxy S21 Ultra are both excellent products that will more than do their job!