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Ghostek NAUTICAL Waterproof Samsung Galaxy S21 Ultra 5G Case - Screen & Camera Protector, Shockproof (6.8") Phantom Clear

  • Based on 487 reviews
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Size: Galaxy S21 Ultra


Color: Phantom Clear


Brand: Ghostek


Compatible Phone Models: Samsung Galaxy S21


Color: Clear


Item dimensions L x W x H: 8 x 5 x 0.7 inches


Water Resistance Level: Waterproof


Product Dimensions: 8 x 5 x 0.7 inches


Item Weight: 1.06 ounces


Item model number: GHOCAS2723


Is Discontinued By Manufacturer: No


Special features: Heavy Duty Protection, Waterproof, Camera Protector, Water Resistant


Other display features: Wireless


Color: Clear


Manufacturer: Ghostek


Date First Available: February 3, 2021


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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews


  • Returned the First but love the second.
Size: Galaxy S21 Ultra Color: Phantom Clear
I have a trip to a beach scheduled... and wanted to take some underwater pictures. After reading reviews this one began to get filtered to the top of the list. I pulled the trigger. It arrived timely and so I went through the waterproof testing as outlined by the manufacturer. First attempt "failed". Hmm... maybe I didn't get it fully tight. So I dried it off ensured everything was closed and re-ran the test. Second failure. Well, I after reporting it to Amazon, they sent me a replacement that I tested and this one worked perfectly. The replacement process was quick and very easy. This is a very sturdy device and looks like it would protect my phone well from both a drop and submersion. That being said, I did have to re-program the fingerprint reader to get mine to be recognized with the case on. I have taken a few "random" pictures and they appear to be almost as nice. I am now just looking forward to the trip! Overall, I'd give this a 5-star rating for the quality and customer service. The construction is very well made, easy to figure out. I just gave it a small negative with having to return the original since it didn't function properly and this one required me to reprogram the fingerprint reader. Other than that, I would totally buy this again and suggest other in need of a solid case to consider it. Critieria for Stars: 1 - Total rip off, doesn't perform basic advertised functions or not product advertised. I would likely RETURN and would NEVER recommend. 2 - Not worth the money. Performs some of the basic advertised functions, but likely not all, and ultimately was deemed as not providing enough value for the money spent. I would not buy again, and would likely not recommend unless the buyer had a very specific use case. 3 - It performs the basic functions as advertised, and has some usefulness at the price point, but doesn't work for all of the reasons I purchased. I would likely not buy again, and would only recommend if buyer understood usefulness limitations. 4 - It performs most all of the features I purchased it for, but has limitations. I would likely buy again and would recommend. 5 - Completely as advertised and likely exceeded expectations. Is if high quality and well shipped. I would totally buy again and recommend. ... show more
Reviewed in the United States on June 7, 2022 by TheRandomGuy

  • This case is great
Size: Galaxy S21 Ultra Color: Phantom Clear
It doesn't have a built in screen cover, but the durability of this thing is amazing, everything is over molded so it protects the screen, and the phone is still slim. The case doesn't detract from the sound quality or clarity in anyway, and the buttons stick out and remain very accessible. The case has a rubber mold that has a texture to it that make it nearly impossible to drop. I'm liking it better months later than my otter box cases, which by now are always falling apart. This is still like day 1. And I'm a contractor that does demolition and rough carpentry. ... show more
Reviewed in the United States on December 4, 2024 by Seth

  • Tough case
Size: Galaxy S21 Ultra Color: Phantom Clear
Very tough and well sealed case. The only downside is that if the integrated plastic screen protector gets scratched you have to replace the entire case. If the offered replacements for the screen saver portion, it would definitely be a five star case.
Reviewed in the United States on October 10, 2024 by Dan

  • This case is THE bomb!
Size: Galaxy S21 Ultra Color: Phantom Clear
No kidding. I'm ecstatic over this case. I go out of my way to keep my devices looking new, even after years of use. Previously, I used screen protectors with a book cover which has always been a hassle, especially when trying to take pictures. Plus the screen protectors have always made it difficult to use the fingerprint sensor so I just never used it. Until now. At last, a device protector that is not only waterproof (just an added perk in my opinion) but is actually shockproof, I don't have to "open" the cover to see who's calling or take pictures AND...the sensor works! After 15 long years of book covers and screen protectors for all my phones, I can now use my new sweet S21 Ultra the way it was intended. I just bought another Ghostek for my new Z Fold 6 as well. ... show more
Reviewed in the United States on November 15, 2024 by girbabe

  • Tough case but VERY easy to scratch
Size: Galaxy S21 Ultra Color: Phantom Clear
The case itself is great and I can see it being very protective if you drop your phone. Problems: It is WAY too easy to scratch! Literally, as soon as I put the case on my phone I wiped off the screen of the case and scratched it all over.. Also, the part that covers the charging port is way too small to grab. It takes me forever to try to open the piece to charge my phone. ... show more
Reviewed in the United States on August 26, 2022 by Antonio Antonio

  • Not impressed. Buying a new one from the company I bought from for S10E.
Size: Galaxy S21 Ultra Color: Phantom Clear
The case looks like it will protect against dropping. It feels like it is a good case, but I bought it to try when snorkeling in Hawaii. The two biggest problems were that after about 10 or 15 minutes in the water it started to leak just a tiny amount. Nothing that stopped me as the phone itself is supposed to be good for a bit on its own. I just had to take it out of the water and let it dry out. The second was that the screen protector didn't fit the phone as well as it should and that messed with the touch screen a little bit on selecting, scrolling, etc... It rendered the fingerprint option 90% unusable. Next time I go snorkeling, I'll get a GoPro with a proper case for diving. ... show more
Reviewed in the United States on June 17, 2021 by Drew Nicholas

  • Great 360 protection for your phone!
Size: Galaxy S21 Ultra Color: Phantom Clear
I got this phone case to help protect every part of my phone, from the cameras to the speaker port. This case did a great job! A year later and my phone looks brand new. My only complaints are that the fingerprint reader was slightly off center and made it finnicky to get a read. The case also muffled phone calls and audio, though only slightly it was still noticeable. I never tested its water-tight integrity, but I never needed it to be in anything more than some slashing/heavy rain anyways. Works great! ... show more
Reviewed in the United States on June 24, 2022 by Trevor

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