So I was having a horrible time with my GPS constantly losing signal all of a sudden, to the point where it stopped getting a signal all together. I flashed it back to stock kitkat, and still the problem persisted!!!!! I had been on stock Lollipop and read some people thought that could be the issue. I've read a lot of other people having GPS problems on the G3.
This fix may not apply to all, but it was the ONLY FIX that worked for me, and it worked good.
I had modded my phone to put a copper shim under the CPU with some thermal compound, and this worked good at cooling my CPU, but over time, somehow it caused the GPS to lose signal. I found a service manual for the G3 and the GPS antenna runs right along the edge of the CPU, and was either causing the GPS signal to be shielded, OR, my copper shim was too thick and caused the contacts for the GPS antenna to have issues. As soon as I removed the copper shim, and made sure the screws in the upper left hand part of the phone (when looking at the phone from the back) were secure, very snug, but not too snug, then my GPS signal was fine!! I can post screen shots later, but I thought I'd write a fast post about how to solve this issue, for some at least. :good:
I can't be SURE if the copper shim was shielding the antenna from the signal, or if it was just causing poor contact for the antenna in the black plastic that makes contact with the board, (I'm NOT talking about the NFC antenna on the back of the case). I will test again later with a thinner copper shim, but when I had the shim removed, and had the phone together without screws, it still didn't get a GPS signal. As soon as I put a few screws in, the ones in the left upper corner, and snugly, the signal came back. I really want to be able to use a copper shim in my phone so when I have more time I will investigate this more but so far I've had ZERO luck getting the GPS signal to work again with the shim in the phone.
This fix may not apply to all, but it was the ONLY FIX that worked for me, and it worked good.
I had modded my phone to put a copper shim under the CPU with some thermal compound, and this worked good at cooling my CPU, but over time, somehow it caused the GPS to lose signal. I found a service manual for the G3 and the GPS antenna runs right along the edge of the CPU, and was either causing the GPS signal to be shielded, OR, my copper shim was too thick and caused the contacts for the GPS antenna to have issues. As soon as I removed the copper shim, and made sure the screws in the upper left hand part of the phone (when looking at the phone from the back) were secure, very snug, but not too snug, then my GPS signal was fine!! I can post screen shots later, but I thought I'd write a fast post about how to solve this issue, for some at least. :good:
I can't be SURE if the copper shim was shielding the antenna from the signal, or if it was just causing poor contact for the antenna in the black plastic that makes contact with the board, (I'm NOT talking about the NFC antenna on the back of the case). I will test again later with a thinner copper shim, but when I had the shim removed, and had the phone together without screws, it still didn't get a GPS signal. As soon as I put a few screws in, the ones in the left upper corner, and snugly, the signal came back. I really want to be able to use a copper shim in my phone so when I have more time I will investigate this more but so far I've had ZERO luck getting the GPS signal to work again with the shim in the phone.
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