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Customer Ratings & Reviews

Your price for this item is $239.99
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The comparable value price is $1,199.99

Customer reviews

Rating 4.6 out of 5 stars with 986 reviews

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Rating by feature

  • Display Quality

    Rating 4.8 out of 5 stars

  • Camera

    Rating 4.8 out of 5 stars

  • Battery Life

    Rating 4.7 out of 5 stars

Pros mentioned filter

Cons mentioned filter

91%would recommend to a friend

Customers are saying

Customers are satisfied with the Galaxy S21 Ultra 5G 128GB (Unlocked) smartphone, particularly praising its camera quality, long battery life, and reasonable price point. The phone's design and performance are also well-received, with users appreciating its sleek look, powerful performance, and user-friendly interface.

This summary was generated by AI based on customer reviews.

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.
Page 29 Showing 561-580 of 986 reviews
  • Pros mentioned:
    Camera

    Rated 4 out of 5 stars

    S21 ultra

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great phone. Amazing quality for photos and videos. Definitely like the new phone.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Best candybar phone of 2021 (MKBHD)

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I upgraded from a OnePlus 6t to this and wow. What an upgrade. This phone feels like it has more features than I could ever hope to discover. And the hardware feels so durable. Really an excellent phone. Not in love with the design but that's what a case is for.

    I would recommend this to a friend
  • Cons mentioned:
    Expensive

    Rated 4 out of 5 stars

    expensive

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    a litle expensive, not wather resistent not easy to use and short memory

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    nice but big

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Nice phone, I just wish that it wasn't so big. The phone is so big that I can't find a normal phone case that I can put a credit card in and a few bucks. I have to carry a clutch and I'm not happy about that. Make more REAL phone cases that fit the phone please.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Best Android phone from Samsung

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The Galaxy S21 Ultra 5G is the best Android phone from Samsung. It packs in all of the features you could possibly want in a phone. It has superior camera with dual telephoto lenses, a dynamic display on its big AMOLED screen and impressive battery life.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    S21ultra5g

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    working very well , no problems at all, smooth, and power on off and volume buttons in correct ergonomic position. Only one improvement is if some marker can be done to immediately recognise top vs bottom of phone, sin eh the controls are on the rigth side.

    I would recommend this to a friend
  • Rated 3 out of 5 stars

    Not to My Liking

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Disappointed for the price point. Warning: The glass is slippery. When laid face down on any smooth surface, it will slide off over time. Get a case immediately. The camera is good but in real life I don't use the advanced features. I've used them to experiment. Some are cool and interesting but rarely practical. Display is bright and sharp, but screen interface is laggy. On my device, taps within apps and browser web pages are unresponsive. I often have to tap action objects multiple times for a response. I suspected I was touching the screen edge while holding the device, but often I am not. A consistent and fast connection to wi-fi is less stable than my previous one. Facial and fingerprint recognition to unlock the phone often take multiple tries or fail. Wireless charging is inconsistent. The device often does not recognize it is on the charge pad. Device maintenance check finds no problems.

    No, I would not recommend this to a friend
    • Brand response from Samsung
      Posted .

      Hi Rlculpepper!

      Thank you for purchasing Samsung Galaxy S21 Ultra and leaving your review. We genuinely appreciate your taking the time to let us know of your concern about your device. We are so sorry that you have multiple issues with it. Let me help. Here's the link on troubleshooting steps that you can make whenever this issue occurs:

      If you have a slow internet browser:
      https://www.samsung.com/us/support/troubleshooting/TSG01203056/

      How to keep your Galaxy phone from slowing down:
      https://www.samsung.com/us/support/answer/ANS00078985/

      Using facial recognition security on your galaxy phone:
      https://www.samsung.com/us/support/answer/ANS00062630/

      Common issues with Samsung wireless charging pad:
      https://www.samsung.com/us/support/troubleshooting/TSG01001490/

      For additional assistance, I include the contact information for our Social Support team for immediate support.

      1. Facebook Messenger: http://m.me/samsungsupport
      2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
      3. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us

      Reference No.: 1144253156

      Thank you for choosing Samsung!

      -Remie Samsung

  • Pros mentioned:
    Camera

    Rated 4 out of 5 stars

    S21 ultra

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great phone with very good camera quality, takes extra ordinary pictures.

    I would recommend this to a friend
  • Pros mentioned:
    Camera

    Rated 1 out of 5 stars

    This phone is worse than a s10

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This phone is worse than a s20 ultra, i guess they hoped no one would compare the 2. It has a huge heat problem, and ubderclocks it self to s9 levels after 10 min. I tested them both with wild life stress and runescape. The main test i wanted was runescape , the s21 can only hold its clock for like 30 seconds than it drops below s20 speed. This phone is incapble of doing gaming, after 10 mins its below 15 fps on runescape. No way is it worth 1200 or even 1000 it literally is worse than a razer phone 2, minus it has a oled. They are scaming people hard core with this garbage. They are literally hoping u use ur phone for 30 seconds than let it cool down, or they are hoping no one notices i guess. It is legit worthless, a s10 regular would be better. The speakers on this are terrible garbage, i couldnt even hear the game on the highway, it is atleast 50 percent quiter than a s21. The camera is slightly better , but its almost not noticeable.

    No, I would not recommend this to a friend
  • Rated 5 out of 5 stars

    purchase of the day!!

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    wow what a phone!!! i have not purchased a new cell phone in 5 years and what a purchase i made today. i asked the best buy employee what the best phone was and this one had all the bells and whistle's. the picture quality down to the speed of the 5G its a win win.

    I would recommend this to a friend
  • Cons mentioned:
    Storage

    Rated 4 out of 5 stars

    S21 ultra

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great phone the only thing i wish it had is expandable memory

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Galaxy S21 ultra

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is my first android phone and I really like it, works well I am still learning the android system but I like the phone very much and Samsung has excellent accessories and customer service as well.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    great phone

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    love my phone, i bought the unlocked version so i can use it with any carrier and not have to worry about buying a phone from them.. i just pay the regular unlimited plan and boom... works with 5g and supports the new wifi ax protocol so internet speeds are awesome

    I would recommend this to a friend
  • Pros mentioned:
    Camera

    Rated 4 out of 5 stars

    S21 ultra

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Excellent, best camera, sounds loud, best telephone oh galaxy

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    No going back now

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I was initially nervous spending this much money but it's been worth every penny. The display is top notch 8k is great 128 GB storage being clutch as I have a large digital music collection. After experiencing 5G I can never see myself going back again.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Worth the upgrade

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great phone. Upgraded from the S20 Ultra 5G to the 21, and it does not disappoint. Beautiful phone, great quality. Only detractor is that they removed the expandable storage that the S20 had, but that's not a deal breaker.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Good Phone, But Too Many Apps You Can't Remove

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a high-quality phone. The build is great, and it runs smoothly. The only problem I have with it is that the Samsung version of Android comes with way too many pre-installed apps that you can't get rid of. It's a pity, because otherwise this thing is pretty great.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Great Phone

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great Phone, so cool, easy to use and utility to work.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Lost or stolen item

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I have bought several items from you. This is the first time I didn’t received and item. Which is why I wait so long to contact you about it. I thought it would eventually show up. Now you are telling me you will not resend the item but you still require a payment?

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Great replacement for our NOoe 8's

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought two of these S21 Ultra's to replace my wife & I prior Note 8's. Like this model - and actually has more screen space than the older Note 8. Happy that we purchase unlocked. Took our Note 8 T0-Mobile sim cards and popped them into these new S21 Ultra's and everything woorked great, and no activation fees.

    I would recommend this to a friend