I get great Wi-Fi signal when I am within a few feet of the router. It connects at 325 Mbps and is really fast and fluent (I use my phone mainly for RDPing to my PC). However, even just moving a few feet away drops the signal one bar, and moving 10 feet away I lose the signal 100%. My home router is the Linksys EA6500, an AC1750 router. The issue with losing the signal happens on both the 2.4 GHz band and the 5GHz. I thought it was just the router so I tried it using an old Samsung ATIV S I had lying around... I was still connected to the Wi-Fi signal halfway down my street.
I never used to get this problem, until I sent my phone in to Sony to get the display repaired. On the repair center ticket, they said they replaced the front display and the backplate as well as ran a software update. (from 4.3 to 4.4). I have tried a repair via Sony PC Companion as well as a full reset via the Settings on the phone. Neither of these options have worked and NO, I do not have any power saving applications running.
Please, please help. The phone (phablet) is almost unusable like this