I have noticed that if the GPS was switched on and then if battery power saver mode also had GPS on default setting then the GPS can not be switched off by hitting settings after phone enters power saver mode. In this case the GPS could not be turned off thro settings , it remained on in power saving mode and went on consuming power. more heating was also observed. I had to switch of phone to shut off GPS.
A number of bugs are reported in this forum. I HOPE Sony developers would notice them and fix them in the next build:smileyplain:
