Chosen Solution
on the inside of the G4 are 6 pins in a group of 2 in the top left and 4 on the middle right. the lower 2 of the middle right appear to be the NFC radio, the top 3 on the right appear to be the Qi charging contacts can you confi9rm this and so you know what the other pins do?
The 2 pins to the left side of the camera are for a Qi Wireless charging, which you can upgrade your backplate with, which has a sticker in it that normally only carries a NFC sticker without Qi. Qi+NFC stickers can be found all over amazon for around 10$. Now to the 4 pins to the right of the battery. The lower 2 of them are NFC as you can already see on your backplate that came with your LG G4. I dont know what the upper 2 are for, but i dont think their for a “Radio sticker” as i havent seen any and the G4 uses, same as on some Apple devices, the headphones as an antenna. I hope i could help ;)
Thats Antennas for radio
