LG's True HD IPS Plus display has always been one of the preferred LCD panels around, and the good viewing angles and sharp colors found on the Optimus GJ are a testament to that. While a 720p display seems almost archaic in a modern-day market overflowing with 1080p flagships, the quality of the LCD panel found in the GJ is certainly towards the upper range when it comes to smartphones.
Images on the screen indeed look great and colors pop, especially the reds. For display purists, LG panels feature some of the most accurate color reproduction to be found on smart devices.
We also compared the Optimus GJ to the regular Optimus G. The smaller phone has a screen of 318ppi and, while you can't quite see individual pixels, you can still notice jaggies on curves and diagonals.
The Optimus GJ's screen has higher brightness, though the contrast is somewhat worse. It has a noticeable advantage in viewing angles, the Optimus G screen starts showing a shift in contrast earlier and the effect is much stronger. The Optimus GJ screen is a bit more reflective though.
|Display test||50% brightness||100% brightness|
|Black, cd/m2||White, cd/m2||Black, cd/m2||White, cd/m2|
|LG Optimus GJ||0.15||149||964||0.65||662||1018|
|LG Optimus G||0.14||197||1445||0.33||417||1438|
|LG Optimus G Pro||-||-||-||0.41||611||1489|
|LG Optimus 4X HD||0.34||369||1077||0.68||750||1102|
|Sony Xperia ZR||0.13||128||1001||0.58||581||1004|
|Sony Xperia Z||-||-||-||0.70||492||705|
|Oppo Find 5||0.17||176||1123||0.51||565||1107|
|Nokia Lumia 920||-||-||-||0.48||513||1065|
|Apple iPhone 5||0.13||200||1490||0.48||640||1320|
The capacitive sensor on the screen is very sensitive and will detect touches even if you're wearing gloves, using a long fingernail or an improvised stylus (like keys, some pens, etc.). Unfortunately, there was also a fair number of accidental taps as the screen is a bit too receptive.
You can find all about our display testing routines here.
The LG Optimus GJ features a 2,280 mAh battery, which helped it achieve an endurance rating of 39h in our dedicated test. That's not a particularly great score, but it still means you will be able to go through a day of usage without any trouble.
LG Optimus GJ battery test scorecard
You can find out more about our dedicated testing procedures here.