One thing that has been bugging me in an otherwise great phone, is the wifi signal, quite weak to say the least, my Sony Xperia Z is roughly 2 bars stronger in the same place, in fact, so is my Q10 and various mobiles I have collected over time (Xiaomi Mi2s, Pantech 840s), annoying to say the least, tried all the tweaks and settings mentioned here and elsewhere and while they may help some, for me the signal is still very poor.......
Was watching an excellent tear down video here:
When he mentioned making sure the little contacts for the antennas were sufficiently bent upwards to make a good contact, very interesting!
So I carefully popped off the back after taking out all the twelve little screws, and proceeded to gently bend upwards the two connectors for GPS and wifi, I also ever so slightly roughed the silver connector with a fine needle, all done in theory to aid signal.....
As for the results, well, with the same ROM, and no router reboot etc.... the wifi that used to hover at one signal pip, maybe two, now moves between two and three, it even went full bar briefly, which it had never done before from the spot I used! And there are a few more SSID's in the list too
I am now as you would expect, very happy, the wifi still isn't fantastic, but it's a damn sight better now!!
Please don't try this and then blame me if you mess up your phone, I take no responsibility if you do, posted this just because I was quite surprised with the results!