
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 by 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. Be 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 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 in 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.
A: Hey there BrianDP, thank you for finding the free time out of your busy day to ask us your question about the Samsung Galaxy S21 5G. The advertised Galaxy S21 5G is a 5G enabled device that also works with the 2G, 3G, 4G, and 4G LTE wireless networks when the absence of 5G connectivity occurs. Feel free to reach out to Samsung Support if you have any additional questions for us. Thank you for being a valued Samsung customer. - Debra
Q: Is this phone compatible for T-Mobile?
A: If it's actually unlocked it would be. Mine came locked and was unusable. It was set to AT&T.
Q: Does this phone have a micro SD card slot?
A: undefined
Q: Does this phone uses SIM card? Can I use the phone when I travel to another country?
A: Yes uses normal SIM card
Q: Does the Samsung Galaxy S21 have wifi calling
A: Yes - my S21 5G has wifi calling
A: undefined
Q: What condition is this phone in?
A: Mine came in good condition but it was not unlocked. A total hassle.
Q: Do the pre-owned Galaxy phones have new batteries?
A: The batteries are not new, but they are tested for a minimum of 80% of battery life.

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 by 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. Be 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 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 in 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.

The only glare you'll get now is from jealous strangers. Enjoy high outdoor visibility and a crystal-clear view in bright daylight or at night with adaptive 120Hz Infinity-O Displays equipped with Vision Booster tech. Make nighttime pics and videos come out clear as day with the epic upgrades to our Pro-grade Camera: a big pixel sensor that pulls in tons of light and Super Clear Glass to dial down lens flare. Get epic low-light portraits and selfies thanks to all-new upgrades to the Rear Camera and Selfie Camera, each capturing more light for incredible color and detail. Live Sharing with Google Duo lets you co-watch YouTube videos and content with the whole gang from anywhere. You can even cast it onto your TV to see everyone all at once. Give your night videos the big TV break they deserve. Use Smart View to cast to your TV and either mirror your phone, or keep using other apps without interrupting the show. Seamlessly connect your phone and computer and use your favorite mobile apps right on your Windows PC. Accomplish more and keep the collaboration going wherever your business takes you with the next-level integration of both Microsoft and Google cloud productivity tools. Switch up the view with an even bigger screen, or use both devices at once for even more space to create. Your Samsung Account makes it seamless to continue edits from one Galaxy to another, so you can start something on your phone and finish on Galaxy Tab S8+. Whether you're vlogging your day, gaming all night or simply scrolling your feed, the 4nm processor makes for an incredibly smooth experience. Worry less with Corning Gorilla Glass Victus+ on the screen and back panels and a polished, protective Armor Aluminum frame. Plus, with its IP68 water resistance rating, it can take a splash, too. Secure your private data from the second you turn your phone on with Samsung Knox. Knox Vault helps keep your biometric information safe, while Secure Folder locks down your private data. And the new Permission Usage dashboard lets you see which apps are sharing your data or tracking you, and allows you to grant or deny access on your terms.

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 by 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. Be 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 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 in 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.

The iconic S Pen fits right into S for the first time. Eject it from the bottom to take notes, sketch, edit content with precision or control your phone. The smoothest in the Galaxy, this Pro-grade Camera corrects shake better than ever for steady clarity in each frame. Super HDR adjusts your shots for epic details and hues — displaying 64x more color even in tricky shadows or back-lit shots. Take full control over your shots by saving RAW files directly to the Gallery,10 so you can fine-tune on your phone, or edit on your PC. Snap brighter, clearer pics with fresh camera innovations and a 108MP sensor, the highest res pics available on a smartphone. Work, play and do your thing from one day into the next with a massive 5000mAh (typical) battery that intelligently saves power for when you need it most. Full speed ahead. Get a super-fast charge that outlasts the day when you plug into the 45W Power Adapter. With all that battery power, there's plenty to spare. Give your friend a boost, or wirelessly charge your earbuds on the go. Formidable aluminum frame. The latest Gorilla® Glass. Water resistant phone and S Pen. We've got you covered. Galaxy Note owners: You asked, we listened. The S Pen is now embedded with Galaxy S22 Ultra. Sketch, turn handwriting into text, edit with pinpoint accuracy. And do it all with that pen-to-paper feel. Live Sharing with Google Duo lets you co-watch YouTube videos and content with the whole gang from anywhere. You can even cast it onto your TV to see everyone all at once. Seamlessly connect your phone and computer and use your favorite mobile apps right on your Windows PC. Accomplish more and keep the collaboration going wherever your business takes you with the next-level integration of both Microsoft and Google cloud productivity tools. Secure your private data from the second you turn your phone on with Samsung Knox. Knox Vault keeps your biometric information safe, while Secure Folder locks down your private data. And the new Permission Usage dashboard lets you see which apps are sharing your data or tracking you, and allows you to grant or deny access on your terms.
| Pros for Samsung - Pre-Owned Excellent Galaxy S21 5G 128GB (Unlocked) - Phantom Violet | |||
|---|---|---|---|
| Overall Performance, Condition, Camera Quality, Battery Life, Size | Overall Performance | Overall Performance, Condition, Camera Quality, Battery Life, Size | There were no pros for this product— |
| Cons for Samsung - Pre-Owned Excellent Galaxy S21 5G 128GB (Unlocked) - Phantom Violet | |||
| Functionality, Heat Dissipation | There were no cons for this product— | Functionality, Heat Dissipation | There were no cons for this product— |
Customers express satisfaction with the overall performance, condition, and camera quality of the Pre-Owned Excellent Galaxy S21 5G. Many find the phone to be in great shape and appreciate its exceptional camera. Some customers have reported issues with cellphone signal and the phone overheating. However, positive feedback generally outweighs the negatives.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
I bought this phone for a friend who needed a second one for personal use besides her work phone and did not want to spend a lot of money for a new phone yet. It looks like brand new no dents, no scratches anywhere on the phone. Front display is perfect, sides of the phone and back of it are perfect. Turns on perfectly with no issues on Google, Samsung, or Android. Cameras work great both front & back. I tested it before gifting it to my friend and haven't heard any complains from her yet. Phone has a screen proctector.
This review is from Samsung - Pre-Owned Excellent Galaxy S21 5G 128GB (Unlocked) - Phantom Gray
Posted by MrBlueOP
When i bought the phone online it said "unlocked" but when i picked it up and opened it it said t mobile maybe because i got an open box phone but i still enjoy the phone it was clean and barley had no marks not even a spec best buy is a reliable source of sorts but kinda dissapointed that it wasent unlocked but love the phone anyways four starts :D (as you can see in the picture i can not uninstall the hope making me to believe its locked and when i turn on the phone it does the same thing pink t mobile logo !)
This review is from Samsung - Pre-Owned Excellent Galaxy S21 5G 128GB (Unlocked) - Phantom Gray
Posted by SamretheanyY
This phone works great! I love the camera and the display. Gave a photo for camera quality example.
This review is from Samsung - Pre-Owned Excellent Galaxy S21 5G 128GB (Unlocked) - Phantom Gray
Posted by ToriD