Does the 55UJ7700 work with RemotApp?
Yes. The 55UJ7700 runs webOS 3.5, 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: LG webOS (SSAP 3000/3001)
What the code 55UJ7700 means
TV model codes follow the maker’s naming rules. Reading it piece by piece:
55Screen size in inchesUJ7700Series (2017 line) · UHD
55UJ7700 specifications
Display
| Display diagonal | 138.7 cm (54.6") |
|---|---|
| HD type | 4K Ultra HD |
| Display technology | LED |
| Screen shape | Flat |
| Motion interpolation technology | TruMotion |
| Display resolution | 3840 x 2160 pixels |
TV tuner
| Analog signal format system | NTSC |
|---|---|
| Digital signal format system | ATSC |
Smart TV
| Smart TV | Yes |
|---|---|
| Operating system installed | WebOS |
| Operating system version | webOS 3.5 |
Audio
| Number of speakers | 1 |
|---|---|
| RMS rated power | 20 W |
| Audio decoders | DTS-HD |
Network
| Wi-Fi | Yes |
|---|---|
| Wi-Fi standards | Wi-Fi 5 (802.11ac) |
| Ethernet LAN | Yes |
| Wi-Fi Direct | Yes |
| Web browser | Yes |
Design
| Product colour | Black |
|---|---|
| VESA mounting | Yes |
| Panel mounting interface | 300 x 300 mm |
Performance
| Backlight dimming technology | Local Dimming |
|---|---|
| High Dynamic Range (HDR) supported | Yes |
Ports & interfaces
| HDCP | Yes |
|---|---|
| PC in (D-Sub) | No |
| DVI port | No |
| Ethernet LAN (RJ-45) ports | 1 |
| USB 2.0 ports quantity | 2 |
| Component video (YPbPr/YCbCr) in | 1 |
| Composite video in | 1 |
| Digital audio optical out | 1 |
| RF ports quantity | 1 |
| HDMI ports quantity | 4 |
| Consumer Electronics Control (CEC) | SimpLink |
Power
| Power consumption (standby) | 0.5 W |
|---|
Weight & dimensions
| Width (with stand) | 1236.9 mm |
|---|---|
| Depth (with stand) | 233.6 mm |
| Height (with stand) | 777.2 mm |
| Weight (with stand) | 15.9 kg |
| Width (without stand) | 1236.9 mm |
| Depth (without stand) | 60.9 mm |
| Height (without stand) | 726.4 mm |
| Weight (without stand) | 15.7 kg |
Other features
| 3D | No |
|---|---|
| App store | LG Content Store |
Technical data: Open Icecat and the manufacturer. Check the official page before buying; specs can vary by batch and market.
How to control the 55UJ7700 with your phone
- Connect your phone to the same Wi-Fi network as the TV. (Not the guest network.)
- Turn the TV on and install RemotApp on your phone.
- Open RemotApp. It finds the TVs on your network by itself; tap your LG TV.
- The TV shows a connection request from RemotApp. Select “Accept”.
- Tap Volume + to test. That’s it: your phone is now the remote.
Full guide for LG TVs, with fixes when it won’t connect
Turning the 55UJ7700 on without the remote
Turn on “Mobile TV On” (or “Turn on via Wi-Fi”), usually under Settings › General › Devices. The TV then accepts a wake-up signal from your phone while in standby.
Questions about the 55UJ7700
Can I control the LG 55UJ7700 with my phone?
Yes. The 55UJ7700 runs webOS 3.5, and RemotApp controls it over Wi-Fi with no setup beyond accepting the connection on the TV once.
What year is the LG 55UJ7700?
The 55UJ7700 is part of LG’s 2017 line (UHD UJ7700).
What operating system does the 55UJ7700 use?
The 55UJ7700 runs webOS 3.5.
How many HDMI ports does the 55UJ7700 have?
The 55UJ7700 has 4 HDMI ports.
Turning the 55UJ7700 on without the remote
Turn on “Mobile TV On” (or “Turn on via Wi-Fi”), usually under Settings › General › Devices. The TV then accepts a wake-up signal from your phone while in standby.