The LG G3 Hidden / Service Menu depending on which carrier’s device you have, so note the correct one for your LG G3 below.
Each carrier’s Hidden Menu can offer different options. Following is the Sprint LG G3’s options:
Warning: this may severely damage your phone if you change certain settings that you don’t understand! I will not be responsible for any damage.
LG G3 Phone Photos – LG Cell Phone Pictures
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Hi, please tell me how to get into the hidden service menu on the LG G Stylo for T-Mobile. I need to override the brightness settings. Thanks