The LG G4 was released in the US in early June 2015, as always focusing on high-end specifications and a refined fashion sense that makes it stand out in the premium smartphone market. Each version of the phone will have a different model number based on if it is sold by a carrier or sold by LG as a US Unlocked or International model.

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What would cause the phone to get poor signal?

I have a LG G4 AT&T (H810/6782A) and the phone gets little to no signal in the house, but when I go outside to try and get signal I still have problems getting any sort of reasonable signal.

I have tried a spare phone I have (Lumia 635) that I keep as a spare phone (which I am using right now), and that gets signal both in the house and outside; I can even make a call without the signal breaking up. I can even make a call inside. I average 2 bars in the house and 3 outside with the Nokia, and has no problems with getting signal.

The LG doesn't get signal inside and struggles to get (and retain) a signal (which has not happened on the Nokia), so it's a phone problem.

I have taken the back off so I could look for anything obvious on the board, and I never seen anything that stuck out to me as a problem from a quick glance of the board. As a phone, it is useless because of this problem.

Is there anything I can do to fix it? This phone is currently on a payment plan and it can't be removed without paying the balance on the phone (though I suppose I can switch phones without this).

Answered! View the answer I have this problem too

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I also have LG G4 and I can say that if compared to my second phone Lumia 640 LTE the LG gets worse signal, and also doesn't like so much changing transmitters.

Did your problem exist from the beginning, or it appeared suddenly?

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My phone had a motherboard failure, so I can't do any more troubleshooting on it. While I can't fix the phone without a new board now, I still appreciate the help @rufus_lupus.

If you (or anyone else who sees this) is curious as to what happened with the phone, this post should describe what happened: How do I get the phone working for data recovery?

The problem pretty much appeared over time as AT&T released software updates, so I think it developed over time in software. I'm convinced HW faults didn't help, especially since LG ADMITTED this phone has motherboard problems.

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