Best Buy Tech Fest SaleEnds Sunday. Limited quantities. No rainchecks.Shop now

Skip to contentGo to Product Search
Main Content

Customer Ratings & Reviews

No content
  • Front. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 11. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 12. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 13. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 14. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 15. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 16. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 17. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 18. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 19. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 20. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 21. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 22. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 23. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 24. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 25. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 26. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 27. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 28. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Alt View 29. Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black.
  • Unboxing - Samsung Galaxy S23 Ultra & Book3 Pro 360 video 2 minutes 04 seconds
  • Galaxy S23 Ultra Pen Phantom Black 3D Spin Video video 0 minutes 10 seconds
  • Galaxy S23 Ultra Phantom Black 3D Spin Video video 0 minutes 10 seconds
  • Galaxy S23 Series Premium Design Video video 0 minutes 27 seconds
  • Galaxy S23 Series Camera Feature Video video 0 minutes 32 seconds
  • Galaxy S23 Series Powerful Performance Video video 0 minutes 27 seconds
  • Galaxy S23 Ultra Gaming Video video 0 minutes 30 seconds

Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Phantom Black

Model:
SM-S918UZKFXAA
SKU:
6529724
Highly rated by customers for:
Loading...

Customer reviews

Rating 4.8 out of 5 stars with 959 reviews

Rating Filter

Rating by feature

  • Display Quality

    Rating 4.9 out of 5 stars

  • Camera

    Rating 4.9 out of 5 stars

  • Battery Life

    Rating 4.8 out of 5 stars

Pros mentioned filter

Cons mentioned filter

96%would recommend to a friend

Customers are saying

Customers are satisfied with the Galaxy S23 Ultra 512GB (Unlocked) for its excellent camera quality, long battery life, and powerful performance. They appreciate the built-in S Pen and stylish design. However, some customers are disappointed with the lack of a microSD card slot, the high price, and the heavy weight of the phone.

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 31 Showing 601-620 of 959 reviews

  • Best phone ever

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

    Great phone. The zoom quality. Everything is great about this phone.

    I would recommend this to a friend

  • A+++ Great phone. :)

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

    I enjoy using this phone. I haven't had any problems with it at all. Clear calls great with videos, photos, and music.

    This review is from Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Green

    I would recommend this to a friend

  • Great phone

    |
    |
    Posted . Owned for 10 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I liked the phone very much but unfortunately I have grown to use to the Apple iPhone so I give to a friend of mine. They love it very much

    I would recommend this to a friend

  • It's good, but not worth the price

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

    This phone is slightly overpriced, but with the payment plans it makes it easier to afford. The camera has issues focusing at times.

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

    Camera

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

    Great camera and camcorder. Good upgrade from s21 ultra.

    I would recommend this to a friend

  • Solid upgrade from the S21

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

    We've had no problems with the phones that we've bought. I definitely recommend getting the unlocked version over the carrier's version because you don't get as much bloatware.

    I would recommend this to a friend

  • Amazing phone

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

    Good product, amazing phone. Consistent and reliable.

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

    Samsung S23 Ultra

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

    Had for a few months, still working great. Battery is good.

    I would recommend this to a friend

  • Excellent

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

    Absolutely amazing phone Best buy total tech I purchased with it goes hand in hand they are very helpful and it goes well with an awesome phone I would recommend to anyone

    This review is from Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Cream

    I would recommend this to a friend

  • More POWER!

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

    This has everything that was great about my old Note, and everything I love about all my Samsung's! Don't buy phones with fruit on them, get this!!!

    This review is from Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Green

    I would recommend this to a friend

  • Samsung 1T unlocked

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

    Im glad i got the 1T unlocked before they stopped selling them. It has been a great phone so far and i have lots of space. It runs great and pen is definitely a plus fpr writting notes

    I would recommend this to a friend

  • Samsung

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

    Great phone, but this is my 3rd phone in 2 years. My phone continue to be defective.

    This review is from Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Lavender

    I would recommend this to a friend

  • Good

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

    Switched from IPhone 12 pro max to S23 Ultra, always knew how nice an android is but this phone excedded my expectations

    I would recommend this to a friend

  • Phone Upgrade

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

    Ive had the same phone for about 5 years and i finally upgrade! So many great features and a smooth purchasing process!

    I would recommend this to a friend

  • Change my iphone

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

    I chage my iphone for this s23 ultra and is really awsomeee omg

    This review is from Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Cream

    I would recommend this to a friend

  • Heavy but awesome

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

    I had the galaxy s20 fe before this and really wanted an upgrade. I love this phone. Glad i took the plunge and bought it. Inly downside is it is a bit on the heavy side.

    This review is from Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Green

    I would recommend this to a friend

  • Samsung Galaxy s23

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

    Great product. Great updates. I love Samsung Galaxy.

    I would recommend this to a friend

  • Samsung galaxy S23 Ultra

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

    The phone came as advertised!! It was such a great open-box deal!! I would recommend it to anyone!!

    I would recommend this to a friend

  • Excellent Upgrade

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

    Upgraded to this phone after my S21 Ultra died. Enjoying it. Its been a while since i had a "Note". I missed it. I work on my phone constantly. Hasnt let me down.

    This review is from Samsung - Galaxy S23 Ultra 512GB (Unlocked) - Cream

    I would recommend this to a friend

  • Much more of an upgrade than expected...

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

    Huge improvement over my old S21 Ultra in terms of battery life and performance. First time I've felt happy with the battery endurance. Camera improvements are nice too.

    I would recommend this to a friend
Page 31, Showing 601-620 of 959 reviews
Sign in or Create Account

Get the latest deals and more.

Best Buy appLearn more
Share on YouTubeShare on InstagramShare on TikTokShare on FacebookShare on PinterestShare on X
Best Buy Canada
AccessibilityTerms & ConditionsPrivacyInterest-Based AdsState Privacy RightsHealth Data PrivacyDo Not Sell/Share My Personal InformationLimit Use of My Sensitive Personal InformationTargeted Advertising Opt OutCA Supply Chain Transparency Act
In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.