[Q] Xperia T (LT30p) not detected in computer
I have a very strange problem with my Xperia LT30p. It has been a while it is not shown in computer when I connect with USB neither it charges from computer. Interestingly phone has no problem with UTG. It works perfectly. It does one peculiar thing with wall charger. It doesn't always charge with wall charger. After few minute of connecting with wall charger, it charges sometime. But when phone is switched off, and connected to wall charger, it immediately showing SONY logo, led is on for about a second or more then it restarts, shows SONY logo and charge it normally. After this, if phone is turn on, it continues charging with no issue. This happens with other computer charger/data cable (tried samsung, HTC, nokia & sony)
After this problem has arise, battery drains very fast. Battery goes from 100% to 50% in 6-7 hours without touching it for a second with all background apps frozen with Greenify. Previously it only went around 85-90%. I tried volume UP+power on, didn't help. Then I tired Factory data reset from setting>backup&reset>factory data reset. Now after factory data reset, phone no longer is rooted and battery drains more faster. I can't do clean installation of OS from Sony Update Service as it is not detected at all in computer whether phone is turn on or off. Neither it is shown in device manger in computer in unknown device.