QUOTE(russell612 @ Feb 24 2014, 07:57 PM)
Is it normal if the battery decreases while using and charging? That is quite unusual. Does the battery needs to warm up before it becomes normal? Need help
the problem with this phone is that the design causes too much heat
case point,
I use the phone as a car camera recorder
(https://play.google.com/store/apps/details?id=com.dailyroads.v&hl=en)
By setting the background recording, the display is turn off, thus saving more batt
the phone is always connected to a powerbank @1A
because the location of the phone on my dashboard is away from the aircon holes, and sometimes directly under the sun sometimes, the phone does heat up
and when heat up the charging slows down or halted
I have to make a deflection from the aircon hole to the phone to cool it down and thus the charging resume
case point 2
I use the phone mainly for browsing, and on wifi, the phone does heat up
I did use a heatsink to cool the back, and this somewhat helps
(but not fun holding a block of copper to the phones back)
even when the charger is able to go 1.5A, whenever the phone heats too much the charging stops
this is normal for the safety of the unit
one way to alleviate the problem is to use a modified firmware with a processor speed control, like existenz version
this helps cause at even @ fixed 385Mhz the phone is still usable to browse and run games such as The Simpson Tapped out (normal speed 384~1512Mhz)
At this low speed, the heat generation as well as power used is lower, thus the charging can resume while in use
even more extreme is to use firmwares with modified kernel (unlocking bootloader required)
and to set low voltage to certain speeds
some people are even able to get 7 hrs of screen on time with these kind of mods
TLDR : Control the heat, you can control batt charging and life