It makes sense comparing LG 55UJ7700 vs LG 49LJ5100 because they both are able to give some premium features. The biggest difference between TVs is screen size, namely 55 and 49 inches respectively. The 55UJ7700 belongs to the series UJ770, and the LG 49LJ5100 - LJ5100. The LG 55UJ7700 series has 55, 60, 65 inches diagonals, and 49LJ5100 boasts 49 inches diagonals.
The 55UJ7700 is capable of playing video in 4K/UHD resolution, which can't be said for 49LJ5100. Each of the compared devices supports Full HD resolution. The IPS display is used in each of the models. The screen refresh rate is 60Hz, the leader can not be selected here.
Sound in the stereo format is available to each TV. The speaker power of the LG 55UJ7700 is 20W, versus 10W of the LG 49LJ5100. Dolby Atmos multi-channel audio format is not supported by both of the tested models.
The width of the 55UJ7700 is 123.7/48.7 cm/in, and for the 49LJ5100 it is 110.74/43.59 cm/inches. The height of LG 55UJ7700 is 72.64/28.6 cm/in, LG 49LJ5100 of height 65.8/25.9 cm/inches. A depth 55UJ7700 is 6.1/2.4 cm/in, the 49LJ5100 has 8.1/3.18 cm/in depth.
The 55UJ7700 has 4 HDMI connectors versus 2 connectors in the 49LJ5100. As for USB, the 55UJ7700 has 2 ports, compared with 1 ports for the 49LJ5100. Only the LG 55UJ7700 has the ability to connect to the Internet via WI-FI.
VESA mount is a standardized bracket system for mounting your TV to a wall. Contemplated TVs have the same size and of anchorages 300 x 300.
You can watch Netflix TV shows and movies on only on the 55UJ7700. HBO service is not available for each of the competitors.
As for Smart TV, only LG 55UJ7700 has this feature. The 55UJ7700 has Local Dimming technology. Voice control is not available for these models.
The LG 55UJ7700 is better TV in this comparison. Check LG 55UJ7700 price