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Customer Ratings & Reviews

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Customer reviews

Rating 4.6 out of 5 stars with 196 reviews

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Rating by feature

  • Display Quality

    Rating 4.8 out of 5 stars

  • Camera

    Rating 4.9 out of 5 stars

  • Battery Life

    Rating 4.7 out of 5 stars

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Cons mentioned filter

89%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 3 Showing 41-60 of 196 reviews
  • Pros mentioned:
    Battery life

    Rated 4 out of 5 stars

    Get it now! on Sale only

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

    So if you're buying this to see the moon. Don't. When did you care about looking up at the moon normally anyways? Regardless if you are stuck between this and iphone 13 pro max. I went for this and i also own Iphone 13 pro max and let me say battery life screen brightness display just looks amazing on this compared to iphone. Though iphone does have a little more natural shadow coverage and makes the picture look warm this has a brighter screen and much higher brightness compared to the Iphone. I all depends on you. You want something that works for a long time or you want to buy the name. Chances are you want to buy the name and go for iphone. Either way great phones you won't be dissapointed

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

    Rated 5 out of 5 stars

    Incredible phone.

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

    The galaxy S21 Ultra is an extremely powerful phone even two years after its release date. The phone is beautiful and just works. The S21 Ultra can take a beating as I am extremely rough with my phones and this is the first phone that has stood up to my daily use patterns. Two years after release it still has jaw dropping features such as 100x zoom and other cameras that work exceptionally well. I highly recommend this phone for absolutely anybody.

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

    Rated 5 out of 5 stars

    The best

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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.

    This is by far the most solid phone Samsung has ever released. Excellent battery, camera is professional material, build is solid.

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

    Rated 4 out of 5 stars

    S21 Ultra

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

    Just as good as past Samsung models I've had. Little better camera. Still a little fuzzy when zooming in. Wish they would stop getting bigger with each new model.

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

    Rated 5 out of 5 stars

    Samsung S21 Ultra Review

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

    Its a really good phone its fast the camara is good everything is good about this phone i would recommend it to others

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

    Samsung S21 ultra

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    Posted . Owned for 9 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love this phone. Zero problems at this point and I have had it for over 2 years. Awesome

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

    Good Phone but bad software

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

    Excellent phone but software issues. Keeps on randomly crashing and shows samsung logo as if the phone is restarted. My Note 5 was better than this. Maybe switch to iphone next time.

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

    Nice

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

    Nice phone is a perfect phone I'm recomendaron for everyone

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

    Great phone dragged down by samsung’s cust service

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

    Phone is great. Was very happy with it within the short time i had it. This review is for my 2nd s21ultra within 3 months. The 1st one(purchased from amazon brand new from their samsung store)had an issue with the top left corner of the screen having some discoloration after just texted 5 weeks. I had to send it to samsung which they then sent back and told me there was nothing wrong with it. After explaining to their tech support how to replicate the issue they had me resend it after which they decided the item could not be repaired. I heard nothing from them for about 2 weeks after being promised a replacement. When i finally decided to call they finally told me there was no s21 ultras in stock on their part and that they would issue me a refund instead. It took them another 4 weeks(maybe more) to get me my money back. Halfway through the wait I decide to purchase another unit out of pocket and that was this purchase. Why the 5 stars? Because the product is great and it deserves it but I feel like I still need to share my experience with their so called case management team. I ended up returning this purchase as well because it kept restarting on it owns even without background apps. After 11yrs of being an android user(about of 8 of which were with galaxy flagships) I switched to iOS. Would I recommend this product to a friend? Yeah why not it’s a great phone packed with features. I fell like I’ve just been unlucky with defective units. But with that being said I would only recommend it to a friend if I’m unable to convince them to switch to iOS

    No, I would not recommend this to a friend
  • Pros mentioned:
    Camera, Speed

    Rated 5 out of 5 stars

    Fast AND amazing camera

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

    Replaced my google pixel 3. It's a night and day difference. Fast response and amazing camera

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

    Best phone

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

    Grest phone still using it today been 2 years absolutely no problems. I would 10 out of 10 recomend

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

    Just love the phone.

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

    This phone is I still using And it’s services going so good so far. I love Best Buy all products

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

    Rated 5 out of 5 stars

    ANDROID for LIFE!

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

    This slick, sleek, phone is everything and more! I don't know a lot of the technical terms, but the camera front and back is exceptional! The size of this phone is perfect! I don't need an iPad with a phone this size. Viewing movies and videos is amazing! Lastly, I am a die-hard Android user. I wouldn't dream of going over to the iPhone. Samsung's technology is easy for me to navigate, and I love it!.

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

    AnitaXAneta

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I am really satisfying with the phone ... since past two years working amazing

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

    Rated 5 out of 5 stars

    Amazing

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

    Camera 10/10 Battery 10/10 I’m not android person but this one it’s amazing!!!

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

    Rated 5 out of 5 stars

    great phone

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

    it has been an upgrade from an s10 , very big difference , very fast , great camera

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

    Rated 5 out of 5 stars

    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.

    I really like the phone great camera work great and very good price I pay

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

    Great phone great price

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    phone was in like new condition with no issues, everything works as it should

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

    Rated 5 out of 5 stars

    Samsung S21 Ultra

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

    I've been a fan of Samsung cell phones since the S2. My favorite was the S4. The note 5 was a close 2nd. The S21 is a good phone. It has a good screen, its fast. The size is good. The only downside to me (my opinion only) is the curved screen. I find it hard to find a good screen protector or a phone case to protect the screen. Othe then thatbits a great phone.

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

    Great deal

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very great deal is low price for this phone don’t need pay a new one

    I would recommend this to a friend
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