8.3

Samsung Galaxy S21 Ultra reviews by real users Samsung Galaxy S21 Ultra

User reviews

User score

8.9
  • 83
  • 15
  • 1
  • 2
  • 1
102 reviews
  • Screen8.8
  • Performance9.2
  • Camera9.0
  • Connectivity9.2
  • Battery7.3
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Design & Materials

Is it a drop-resistant and scratch-resistant smartphone?
8.3

102 reviews

Do you think it's a nice phone?
9.4

102 reviews

Is it comfortable?
8.5

102 reviews

Can you see it well in the sunlight?
9.0

102 reviews

Performance & Hardware

Does it have good sound?
9.4

102 reviews

Does it work smoothly in everyday use?
9.5

102 reviews

What's your experience been with demanding games?
8.8

102 reviews

Camera

Quality of daytime photos
9.4

102 reviews

Quality of nighttime photos
8.3

102 reviews

Quality of selfies
9.0

102 reviews

Does it have a powerful flash?
9.1

102 reviews

Connectivity

Does it have good coverage for calls?
9.2

102 reviews

Quality of the GPS
9.0

102 reviews

And the WiFi?
9.3

102 reviews

Battery

How long does the battery last?
  • 3%
    Less than half day
  • 16%
    Less than a day
  • 44%
    One day
  • 30%
    More than one day
  • 8%
    Two days or more

102 reviews

Software

Did it come with preinstalled applications?
  • 8%
    It comes with a clean operating system
  • 79%
    It has preinstalled apps but they don't bother me
  • 13%
    It has preinstalled apps that I can't uninstall

102 reviews

Do you regularly receive updates?
  • 2%
    Never
  • 3%
    Once a year
  • 31%
    Every six months
  • 64%
    Every two months or less

102 reviews

View more

All 102 opinions

  • Nice

    When it comes in camera and performance in demands games , multi apps , smoothest and no lag in any app it's a great phone but the Heating make all of that decrease along the battery that in my experience i have to charge it 3 or 4 times per day I advise to use it with a cooler if you're going to play and optimize it to make the battery last longer

    Pros
    • 8
    Cons
    • 2
    • 8.9
    • Screen7.2
    • Performance9.3
    • Camera9.0
    • Connectivity9.6
    • Battery5.0
  • It's a great phone, but it quickly fell in the rankings due to the AI boom.

    Pros
    • Stylish design and acceptable performance considering its age.
    Cons
    • The battery isn't the best.
    • 8.9
    • Screen9.0
    • Performance8.3
    • Camera8.5
    • Connectivity10
    • Battery0.0
  • Best smartphone 2021

    Beat smartphone

    Pros
    • Design camera
    Cons
    • Battery
    • 10
    • Screen10
    • Performance10
    • Camera10
    • Connectivity10
    • Battery9.0
  • Good phone I used for 2 years

    Display was awesome to use, feature rich phone with good cameras

    • 7
    • Screen8.5
    • Performance8.0
    • Camera7.3
    • Connectivity9.3
    • Battery7.0
  • Long term of gaming session makes it heat and lag

    If CPU temp reach certain degree it drops FPS and i thought SD888 was a good SoC until i used one. The phone heat dissipation is very bad and i don't even play Genshin impact at maximum setings yet it heats up so much ( almost feels like stove ) that it makes gaming impossible. My previously owned Note 20 5G did a great job I'd say this phone is not good for gaming for regular use it indeed is good phone.

    Pros
    • Good for Daily use
    • Good Camera
    • Long battery life in 60fps lowest sceeen res
    • Build Quality
    Cons
    • Heats up during gaming session FPS drops significantly
    • Bad focusing on cameras
    • Not much improvement from its predecessor
    • Pocket stove
    • 5.6
    • Screen6.7
    • Performance7.0
    • Camera6.2
    • Connectivity7.0
    • Battery7.0
  • Heavy camera good but not the best

    Pros
    • Camera zoom
    Cons
    • Battery
    • 9.3
    • Screen8.0
    • Performance10
    • Camera9.5
    • Connectivity10
    • Battery5.0
  • Amazing phone !!!

    This phone has surpassed my expectations in every aspect, including my only complaint...the batter could be a little bigger so that it lasts more than a day. I usually wake up and start the day at 9 and some times I find my self charging my phone around 7 if I use it plenty through out the day , if I leave it alone, it can go to up to next day. Another thing that its
    a little too much ita the price range. It may be top of the line, but Samsung can definitely lower the price. Again it's a very amazing piece of hardware, Just a slightly better/larger battery and a lower price and it's unstoppable. Also, I've read that the charging speed its stupid slow, how ever I didn't face this issue, it charges at a normal rate. But it could have a more effective fast charge...or a charge in the box to begin with...great phone still!!

    Pros
    • Excellent Hardware and software
    • Camara quality its amazing
    • Smooth gliding through the system
    • Pleanty of storage
    • Updates are fetured packed and fixes a lot of bugs
    • Display its clean and crystal clear
    Cons
    • Battery life its a little short for the price
    • Too expensive
    • Night time photos still needs some toches but not
    • Charges a little slow
    • No charger on the box
    • 9.1
    • Screen10
    • Performance10
    • Camera9.7
    • Connectivity10
    • Battery7.0
  • I wish I had never gotten this phone!!!

    I let the AT&T rep talk me into it, and boy am I sorry!! My You cannot set it to automatically add the date to your photos, and adding the date to each picture /manually/individually, is ridiculous! Also, you cannot keep the original photo if you crop it. It only saves the edited one, where before, it saved both! The lightest touch turns on the camera, even though I have it set to 'ignore' accidental touches. I don't like the way the contacts listed in my speed dial, do not show immediate access to sending them a text, like before. I also hate that stupid Bixby crap! I wish I had my galaxy 8 back!!

    Pros
    • Better cvrge than I had when Tmobile bought Sprint
    • Screen is a little bigger.
    • GPS doesn't drag...
    Cons
    • Charges slowly, and loses power quickly
    • Both ends of the charging cord are the same
    • Can't charge it in my car now
    • No way to set automatic dates for photos
    • Calendar is very bland & dates are not highlighted
    • Doesn't also save original pics when you edit them
    • 3
    • Screen4.0
    • Performance7.3
    • Camera7.5
    • Connectivity6.0
    • Battery7.0
  • The best Android device

    Screen, quality, sound, camera set up, in high level!!! Better iPhone 12 pro,

    • 10
    • Screen10
    • Performance10
    • Camera10
    • Connectivity10
    • Battery9.0
  • is a good phone but he is slowli in charging

    Pros
    • camera
    • screen
    • proccesseur
    Cons
    • slowlie charge
    • 9.8
    • Screen10
    • Performance9.6
    • Camera10
    • Connectivity9.3
    • Battery7.0

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Last update
July 16, 2026
State
  • Rumor
  • Presell
  • New
  • On Sale
Latest changes
  • New opinion 9 days ago
  • Name, Storage 2 years ago
  • Version 2 years ago
  • Selfie Camera 2 years ago
  • Flash 4 years ago
8.3
Ki Cost-effective
Score
  • 7.6 Design & Materials
  • 7.0 Performance & Hardware
  • 8.7 Camera
  • 8.2 Connectivity
  • 7.0 Battery
What is a Ki score?
Ki is an automatic score based on the specifications and prices of devices. It is calculated using over 200 variables to rank smartphones, tablets and other devices from best to worst.
How do we calculate the Ki?

In this case, to determine the score we evaluate 5 general aspects:

  • Design and screen
  • Hardware and performance
  • Camera
  • Connectivity
  • Battery

Once these 5 factors have been rated, we introduce the price variable. This means that any two devices with the same ratings get a different Ki score for quality vs price.

Even a device objectively worse than another may have a higher Ki score if it has a better price.

Does the Ki score change?

The Ki varies as time goes by. As new devices with better specifications enter the market the Ki score of older devices will go down, always being compensated of their decrease in price.