Customers are impressed with the quality of the pre-owned Galaxy S21 Ultra 5G 128GB (Unlocked) and are pleasantly surprised to find that it looks brand new with minimal scratches. They are also very satisfied with the superb camera capabilities, particularly the 108MP main sensor and up to 100x Space Zoom. However, some customers have expressed frustration with the fact that the phones are not truly unlocked as advertised, causing issues with SIM card compatibility.
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 41-54 of 54 reviews
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.
Quick delivery and response time. Item was as described.
I would recommend this to a friend
Cons mentioned:
Locked
Rated 1 out of 5 stars
Locked 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 was supposed to be a unlocked phone but was actually a Verizon locked phone so I returned it.
This review is from Samsung - Pre-Owned Excellent Galaxy S21 Ultra 5G 128GB (Unlocked) - Phantom Silver
No, I would not recommend this to a friend
Rated 5 out of 5 stars
I'm Happy.
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
I'm happy with my cell phone, really is amazing and very cheap
This review is from Samsung - Pre-Owned Excellent Galaxy S21 Ultra 5G 128GB (Unlocked) - Phantom Silver
I would recommend this to a friend
Cons mentioned:
Long wait
Rated 1 out of 5 stars
Long wait to get a defective device.
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This pgone was defective and wS returned on the same day i can to pick it up. I also had to wait for a week and some change to recive it and i was not happy that when it finally arrives it defective.
No, I would not recommend this to a friend
Rated 5 out of 5 stars
Very great phone
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Posted . Owned for 2 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Looked almost brand new couldnt even tell it was used
I would recommend this to a friend
Rated 1 out of 5 stars
Price
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Posted . Owned for 2 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Really pricey and for it too be pre owned & not worth it
No, I would not recommend this to a friend
Pros mentioned:
Camera
Rated 4 out of 5 stars
Good product
Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
The phone worked very well, but I did by it used so there were going to be some scratches like on the screen and on the aluminum side piece the cameras have. But these scratches were not very noticeable unless you really try to find them.
I would recommend this to a friend
Cons mentioned:
Locked
Rated 2 out of 5 stars
Not what i ordered
Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
Phone came in perfect condition but its was suppose to be unlocked when it arrived i put sim card in and it was still locked to att so had to return it then they didnt have a phone for the same price and said it would take 2 to 3 weeks to get one after waiting 2 weeks for the first one. so needless to say i wasnt very happy
No, I would not recommend this to a friend
Rated 3 out of 5 stars
PSA - 4+ Year Old Phone
Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
Know what you're buying. This phone is more than 4 years old, and monthly security updates stopped in February 2025. It will only receive quarterly security updates through the end of January 2026. As of today, this gives you a little over 9 months of shelf life on this phone. It's a great phone, just know what you're buying.
No, I would not recommend this to a friend
Pros mentioned:
Camera
Rated 5 out of 5 stars
Camera is awesome!
Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
Phone works great! Camera is the best part. Battery life is good too.
This review is from Samsung - Pre-Owned Excellent Galaxy S21 Ultra 5G 128GB (Unlocked) - Phantom Silver
I would recommend this to a friend
Rated 3 out of 5 stars
Mid range in 2025
Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
For the same price, you can get this brand new on other sites.
I would recommend this to a friend
Rated 5 out of 5 stars
Samsung s21 ultra
Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
A really good phone and solid picture quality and not that heavy compared to the other phones
I would recommend this to a friend
Rated 5 out of 5 stars
Best buy service
Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
I really love shopping best buy cause they do best customer servise
I would recommend this to a friend
Rated 1 out of 5 stars
OVERPRICED - GO TO AMAZON - SAVE OVER $200
Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
OVERPRICED BY OVER $200.
I should have checked AMAZON first, 4 year old phone still going for nearly $500 bucks.