Samsung Galaxy S21 5G G991B 256GB Dual Sim GSM Unlocked Android Smartphone (International Variant/US Compatible LTE) - Phantom Gray
Samsung Galaxy S21 5G G991B 256GB Dual Sim GSM Unlocked Android Smartphone (International Variant/US Compatible LTE) - Phantom Gray
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Samsung Galaxy S21 5G G991B 256GB Dual Sim GSM Unlocked Android Smartphone (International Variant/US Compatible LTE) - Phantom Gray

|597 ratings

Key item features

  • Dynamic Display: 6.2 inches dynamic AMOLED 2X with Corning Gorilla Glass Victus, resolution: 1080 x 2400 pixels
  • Ample Storage: 256GB internal storage with 8GB RAM for smooth performance
  • Triple Camera: Main camera setup includes 64 MP + 12 MP + 12 MP with LED flash, auto-HDR, and panorama; 10 MP selfie camera with dual video call and auto-HDR
  • Powerful Platform: Runs on Android 11 with One UI 3.1, powered by Exynos 2100, Mali-G78 MP14, and Octa-core processor
  • Long-lasting Battery: 4000 mAh non-removable battery with 25W fast charging, 15W wireless charging, and 4.5W reverse wireless charging
  • Compact Dimensions: Measures 5.97 x 2.80 x 0.31 inches and weighs 5.96 ounces
  • Enhanced Security: Features Samsung Knox for defense-grade security, protecting against intrusion, malware, and malicious threats
  • Business Integration: Integrated with Microsoft Office, OneDrive, and Teams for seamless work productivity
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Specs

Brand, SamsungMobile OS, AndroidModel name, Galaxy S21 5GScreen size, 6.2 inHD capacity, 256 GBBattery capacity, 4000 mAh

About this item

Product details

The Galaxy S21 is the phone for business that lets you securely connect and collaborate anywhere. Discover new ways to collaborate with an impressive 8K camera and easily go from mobile to desktop to meetings with Samsung dex. Keep your business data and personal information protected with a secure processor, Samsung Knox, and the Knox portfolio work seamlessly in the way that works best for you with Microsoft and link to Windows. Now you can easily optimize cellular and wi-fi connectivity by accessing the best network and plan at the moment, and stop paying more than necessary with monthly plans. Unlocked by Samsung smartphones work on most major U.S. Networks and allow international business travelers to take advantage of lower local rates. When you get an unlocked Samsung smartphone, it has no pre-loaded carrier apps, so your organization can deliver a more predictable and consistent experience across devices and have greater freedom to customize device software. Inspiration is a fickle creature. The Galaxy S21's intuitive camera lets you capture, share, and collaborate in real time, no matter where you are. Being in front of the camera, behind the camera, or both at the same time director's view puts a whole new spin on the virtual tour. Connect all your devices with wireless Samsung Dex and use your Galaxy S21 as the remote. Take conference calls on your TV, drag and drop files from your phone to your PC, or double your screens with the tap of a finger. The Galaxy S21 comes with a defense-grade security platform built in so you can rest easy. With multiple layers of protection, your device is safe from intrusion, malware, and malicious threats. Keep your fleet of mobile devices in sync and control from end to end. A complete set of cloud-based solutions eliminates the risk of user error for worry-free security, software updates, device setup, and more. Part of Knox's multi-layered security platform, the Galaxy S21's Knox vault is dedicated to protecting your PIN, password, pattern, and blockchain private key. And with biometric authentication, your private data stays private. Getting work done on your smartphone is more important than ever before. The Galaxy S21 comes integrated with Microsoft Office, OneDrive, and Teams so you can easily access all your files, photos, and reminders whether you're in the office, working from home, or on the move.

  • Display: 6.2 inches dynamic Amoled 2X w/corning gorilla glass Victus, resolution: 1080 x 2400 pixels
  • Memory: 256GB, 8GB RAM
  • Main Camera: (Triple) 64 MP + 12 MP + 12 MP w/LED flash, auto-HDR, panorama selfie camera: 10 MP w/dual video call, auto-HDR
  • Platform: OS - Android 11, one UI 3.1, Exynos 2100, Mali-G78 MP14, Octa-core (1x2.9 GHz Cortex-X1 and 3x2.80 GHz Cortex-A78 and 4x2.2 GHz Cortex-A55)
  • Battery: Li-Ion 4000 mAh, non-removable fast charging 25W USB power delivery 3.0 fast Qi/PMA wireless charging 15W reverse wireless charging 4.5W
  • Dimensions: 5.97 x 2.80 x 0.31 in
  • Weight: 5.96 oz
info:
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Specifications

Brand

Samsung

Mobile OS

Android

Model name

Galaxy S21 5G

Screen size

6.2 in

Warranty

Warranty information

30-Day Limited Warranty

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Warnings

Customer ratings & reviews

4.1 out of 5 stars
stars
597 ratings549 reviews
Includes global ratings and reviews
How item rating is calculated
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Showing 1-3 of 549 reviews

Aug 8, 2026
Reviewer name: Geany97
5 out of 5 stars
5 out of 5 stars review

“My favourite phone yet! 🥰

I absolutely love my new Galaxy Z Flip8! 🩷 It's such a beautiful and stylish phone, and I love how compact it is when folded. The camera quality is amazing, especially for taking photos and videos, and the Cover Screen is one of my favourite features. I also love how smooth and fast everything feels. It's my first Flip phone and I'm honestly so happy I decided to make the switch. It feels fun, different and practical at the same time. I'm really enjoying using it every day! 🥰📱

International review
Review from Samsung UK
Helpful?2HAU9D36YYPF765275200
reply from Samsung

We love hearing that we’ve given you that five-star feeling, Geany. Thanks for sharing your brilliant review! ^EW at Samsung Support

Oct 21, 2025
Reviewer name: smoff
5 out of 5 stars
5 out of 5 stars review

susan

[This review was collected as part of a promotion.] I am a old lady use as much as I can being old not much use

International review
Review from Samsung UK
Helpful?2HAU9D36YYPF765275200
reply from Samsung

Thanks for the great review and sharing your feedback with us! Should you ever need us, our friendly Support Team are on hand, you can find all our contact methods and opening hours here: https://www.samsung.com/uk/support/contact/ ^LB at Samsung Support

Sep 24, 2025
Reviewer name: 21phone
5 out of 5 stars
5 out of 5 stars review

Great phone

Really like this phone. Some great tools e.g. the sleep mode with alarm

International review
Review from Samsung UK
Helpful?2HAU9D36YYPF765275200
reply from CX

We’re thrilled to read your thoughts and feedback. Thanks for sharing with us and giving us top marks! ^KF at Samsung Support

Current price is $575.00
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