RemotApp Download

55 Inch Class Crystal UHD 4K TV (U7900F)

Samsung UN55U7900FFXZA

Full specifications, official manuals and how to use your phone as the remote for this Samsung TV.

Screen
55″
Resolution
4K
Year
2025
Line
Crystal UHD
System
Tizen 9.0

Does the UN55U7900FFXZA work with RemotApp?

Yes. The UN55U7900FFXZA runs Tizen 9.0, and RemotApp controls it over Wi-Fi with no setup beyond accepting the connection on the TV once.

  • Remote over Wi-Fi Yes
  • Infrared (Android with IR) Yes
  • Send photos and videos Yes
  • Turn on from the phone Yes

Protocol: Samsung Tizen (WebSocket 8001/8002)

What the code UN55U7900FFXZA means

TV model codes follow the maker’s naming rules. Reading it piece by piece:

  1. UNProduct line and market group · Americas
  2. 55Screen size in inches
  3. U7900FSeries (2025 line) · Crystal UHD
  4. FXZAMarket code · United States

UN55U7900FFXZA specifications

Display

Display diagonal139.7 cm (55")
HD type4K Ultra HD
Display technologyLED
Screen shapeFlat
Supported video modes2160p
Supported graphics resolutions3840 x 2160
Motion interpolation technologyMotion Xcelerator
Native refresh rate60 Hz
Dynamic contrast ratio marketing nameMega Contrast
Display resolution3840 x 2160 pixels

TV tuner

Tuner typeAnalog & digital
Digital signal format systemATSC, Clear QAM
Supported TV bandsDTV

Smart TV

Smart TVYes
Internet TVYes
Operating system installedTizen
Apple AirPlay 2 supportYes
Sound mirroringYes
Smart modesFilmmaker, Movie
Universal guideYes
Video appsSamsung TV Plus

Audio

Number of speakers2
RMS rated power20 W
Audio decodersDolby Audio
Enhanced Audio Return Channel (eARC)Yes

Network

Wi-FiYes
Wi-Fi standardsWi-Fi 5 (802.11ac)
BluetoothYes
Bluetooth version5.3
Ethernet LANYes
Web browserYes

Design

Product colourBlack
VESA mountingYes
Panel mounting interface200 x 200 mm
Frameless designNo
Introduction year2025
Bezel type3 Bezel-less
Stand typeLegs stand
Stand colourBlack

Performance

High Dynamic Range (HDR) technologyHDR 10+, Hybrid Log-Gamma (HLG)
Subtitles functionYes
High Dynamic Range (HDR) supportedYes
Game featuresAuto Low Latency Mode (ALLM), Gaming Hub, HGiG, Variable Refresh Rate (VRR)
Plug and PlayYes
V-chip functionYes
SmartThings app supportYes
MBR supportYes
ConnectShare (USB)Yes
DVD playerNo

Ports & interfaces

Audio Return Channel (ARC)Yes
PC in (D-Sub)No
Ethernet LAN (RJ-45) ports1
USB 2.0 ports quantity1
RF ports quantity1
HDMI ports quantity2
Consumer Electronics Control (CEC)Anynet+

Management features

Control typeRemote, Wireless
Voice controlYes
Voice guideYes
Electronic Programme Guide (EPG)Yes
On Screen Display (OSD)Yes
Number of OSD languages3
On Screen Display (OSD) languagesEnglish, Spanish, French
Auto power offYes
Works with Amazon AlexaYes
Works with the Google AssistantYes
Works with Samsung BixbyYes

Power

Power consumption (typical)97 W
Power consumption (standby)0.5 W
Power consumption (max)120 W
Energy efficiency class (SDR)Not available
Energy efficiency class (HDR)Not available
AC input voltage110 - 120 V
AC input frequency50/60 Hz
Energy saving modeYes

Brand-specific features

Samsung technologies (AV/TV)4K Upscaling, Buds Auto Switch, Contrast Enhancer, Crystal Processor 4K, MetalStream Design, Object Tracking Sound Lite, Q-Symphony, Samsung Health, Samsung Knox Security

Weight & dimensions

Width (with stand)1224 mm
Depth (with stand)198 mm
Height (with stand)759 mm
Weight (with stand)9.88 kg
Width (without stand)1224 mm
Depth (without stand)76 mm
Height (without stand)709 mm
Weight (without stand)9.61 kg
Stand width2.5 cm
Stand depth19.8 cm

Packaging data

Screw threadM8
ManualYes
Package width1354 mm
Package depth127 mm
Package height810 mm
Package weight14.4 kg

Packaging content

Desktop standYes
Cables includedAC
Remote control includedYes
Remote control typeTM2240A

Other features

Batteries includedYes

Technical data: Open Icecat and the manufacturer. Check the official page before buying; specs can vary by batch and market.

How to control the UN55U7900FFXZA with your phone

  1. Connect your phone to the same Wi-Fi network as the TV. (Not the guest network.)
  2. Turn the TV on and install RemotApp on your phone.
  3. Open RemotApp. It finds the TVs on your network by itself; tap your Samsung TV.
  4. A message appears on the TV asking to allow a new device. Select “Allow”.
  5. Tap Volume + to test. That’s it: your phone is now the remote.

Full guide for Samsung TVs, with fixes when it won’t connect

Turning the UN55U7900FFXZA on without the remote

Turn on “Power On with Mobile” in Settings › General › Network › Expert Settings. With it on, the TV keeps listening on Wi-Fi while in standby and RemotApp can wake it.

Questions about the UN55U7900FFXZA

Can I control the Samsung UN55U7900FFXZA with my phone?

Yes. The UN55U7900FFXZA runs Tizen 9.0, and RemotApp controls it over Wi-Fi with no setup beyond accepting the connection on the TV once.

What year is the Samsung UN55U7900FFXZA?

The UN55U7900FFXZA is part of Samsung’s 2025 line (Crystal UHD U7900F).

What operating system does the UN55U7900FFXZA use?

The UN55U7900FFXZA runs Tizen 9.0.

How many HDMI ports does the UN55U7900FFXZA have?

The UN55U7900FFXZA has 2 HDMI ports.

Does the UN55U7900FFXZA have Bluetooth?

Yes

Turning the UN55U7900FFXZA on without the remote

Turn on “Power On with Mobile” in Settings › General › Network › Expert Settings. With it on, the TV keeps listening on Wi-Fi while in standby and RemotApp can wake it.