SamsungUE55AU7100KXXU

55-inches
LCD
4K Ultra-HD

£579Typical price

Test score

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Samsung’s cheapest 55-inch 4K TV from 2021 is as basic as they get. No built-in voice control or PVR aren’t necessarily a huge loss though, and it does have an advanced HDR format (HDR10+). Anything that can benefit the picture is more welcome than satellite features anyway. If it’s used well that is. Here’s our review of the 55-inch UE55AU7100KXXU (sometimes just UE55AU7100).

pros

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cons

What's included?

What is it?
What’s the sound quality like?
What’s it like to use?
How are the smart features?
Is there anything else I should know?
Is Samsung a good TV brand?
Should I buy it?

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KEY TEST RESULTS
Picture quality
Sound quality
Ease of use

Jan 2024Last checked by Which?
Aug 2021First reviewed by Which?
Apr 2021Released

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

How we test TVs

7 Nov 2023

Picture quality

Overall
Freeview
Freeview HD
Satellite tuner picture
HD TV
4K ultra HD
4K HDR
Viewing angle
Motion stability

How we test picture quality

Picture quality tests include broadcast 1080i high-definition TV, Freeview, Freeview HD, viewing angle and the stability of motion in fast action scenes. We also test for 4K Ultra HD and HDR if the TV can support these pictures.

Sound quality

How we test sound quality

This includes the results of our technical tests and our independent listening panel's verdict.

Ease of use

Overall
Installations and instructions
Everyday use
EPG (electronic programme guide)

How we test ease of use

Combined score of all ease of use tests, including installation, everyday use, the electronic programme guide and other features.

Smart TV features

Overall
Smart menu
Smart app store
Multimedia features

How we test smart tv features

We test the internet-connected smart features of each TV, including how useful the menus are, how easy it is to use the app store and what the web browser is like to use.

Energy use

How we test energy use

Based on the power usage when being viewed and in standby and the presence and effectiveness of power-saving features such as a light sensor or radio screen blanking. Power usage can vary massively depending on the type of TV. OLED TVs tend to use less power than LED TVs since they don't have backlights.

Connections and tuners

How we test connections and tuners

A TV with plenty of connection ports allows you to hook up lots of different devices at once. Likewise, TVs with more digital TV tuners give you more options for watching subscription-free TV.

General
Screen size	55-inches
Year released	2021
Range	Samsung AU7100
Height	78.5cm
Width	122.5cm
Depth	25cm
Weight	13.8kg
Full paper manual
Electronic manual built into the TV
Electronic manual available online
Wi-fi setup via smartphone app
Manufacturer guarantee	1 year
Manufacturer guarantee terms	Samsung offers a one-year guarantee with its sets. Some retailer guarantees can be five or six years, so it's worth checking this before you buy.

Display
Display type	LCD
Curved	No
Backlight	yes
Screen resolution	3840 x 2160
Resolution type	4K Ultra-HD
HDR	Yes
HDR10
HLG
HDR10+
Dolby Vision
Dolby Vision IQ
Technicolor
HDR gaming
Contrast	48
Colour	20
Sharpness	10
Backlight setting	42
Screen refresh rate	60
Luminance of peak white (candela per square metre)
Luminance of black (candela per square metre)
Percentage luminance drop at 35 degree horizontal angle from the centre of the screen with 100% white output
Percentage Luminance drop at 35 degree horizontal angle from the centre of the screen with 50% white output
Black level at 35 degree horizontal angle from the centre of the screen
Percentage luminance drop at 20 degree vertical angle from the centre of the screen with 100% white output
Percentage luminance drop at 20 degree vertical angle from the centre of the screen with 50% white output
Black level at 20 degree vertical angle from the centre of the screen
Colour temperature when sat directly in front of the screen (measured in degrees Kelvin)
Colour deviation at 35 degree horizontal angle from the centre of the screen (measured in Kelvin)
Colour deviation at 20 degree vertical angle from the centre of the screen (measured in Kelvin)
Max light output SDR (standard dynamic range) with optimum image settings (measured in Nits)
Max light output HDR (high dynamic range) while displaying small white square taking up 10% of the screen (measured in Nits)
Max light output HDR (high dynamic range) while displaying small white square taking up 60% of the screen (measured in Nits)
Max light output HDR (high dynamic range) while displaying a live scene and white square taking up 10% of the screen (measured in Nits)
Max light output HDR (high dynamic range) while displaying a live scene and white square taking up 60% of the screen (measured in Nits)
Profile	Standard

Features
Freeview	Yes
Freeview HD	Yes
Freeview Play	No
Satellite tuner	No
Satellite HD tuner	No
Freesat HD	No
Number of remote controls	2
Remote control model name
Smart remote	yes
Turn on time	3.5 secs
Smart TV operating system
Smart TV	Yes
Delete pre-installed apps
BBC iPlayer	Yes
Extend memory to download apps and content
All 4	Yes
My 5	Yes
Netflix	Yes
Amazon Video	Yes
ITV Hub	Yes
Freesync
Specific picture mode for gaming
Microphone in remote
Integrated voice assistant
Google Assistant integrated
Amazon Alexa integrated
Other supported voice assistants
Google home app control
Amazon Alexa app control
Text input via voice remote
PVR	No
Twin tuner PVR	No
Watching recordings while another recording is in progress
Digital recordings possible via Freeview and satellite tuners
Timer programming via electronic programme guide
Timer programming and adjusting defined time
Can you rewind the current broadcast
Web browser	Yes

Connections
WiFi	Yes
Wi-fi built-in	yes
HDMI ports	3
HDMI ARC	Yes
HDMI eARC
USB ports	1
Highest stated USB verion
Digital audio optical output	Yes
Headphone output	No
Independent Volume Control	0
Bluetooth	Yes
Digital audio output	Yes

Power
Standby	0.21W
Annual running cost	£34.36

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SamsungUE55AU7100KXXU

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pros

cons

What's included?

How we test TVs

Picture quality

Sound quality

Ease of use

Smart TV features

Energy use

Connections and tuners

How this product's score compares with other televisions we've tested

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LG

LG

Samsung

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SamsungUE55AU7100KXXU

pros

cons

What's included?

Test results

Specifications

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Suggested Alternatives

LG

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