thanks boss for the help...

you are welcome.
hope it works.

anyway uncle benny888, does flashing custom kernel saves battery life?

im afraid to do that...hahaha.....

boss raymondtong94 stil happen la...worried ready...hahaha
do i need to Factory reset the phone?

This post has been edited by khairulanuar: Jun 18 2014, 12:17 PM

Yeah, try a factory reset. If problem still persists, time to fire up flashtool.

Flashtool?

have you flash firmware before? If not use/google Sony Update service to fix your phone

I don't use any custom kernel . Anyway battery life is excellent for me

Go n read up forum xda on flashtool. It is a program to flash firmware . You need to download the firmware file (ftf) first n copy it to the firmware subfolder of the flashtool folder ..you can download any Asian firmware to flash
Or just Google flashtool for Sony phones

http://forum.xda-developers.com/xperia-z-ultra
It has plenty of guides on this phone. Spend some time browsing it

Sony Update Service is more user friendly than flashtool, and can flash most/all Sony phones

I do not like to use SUS as it delete all your phone data n it download firmware online while flashing
Flashtool allow you to keep data intact n is very fast to flash the firmware. You can download first the firmware

ok guys i will try it 1st.

THANKS guys

I see but after i flashed doomlord's kernel, i find that battery life has drastically improved.

boss, i found out that when i remove out my Micro sd the phone not overheating...im using Kingston 32GB class 10..

anyone have this problem?

when i put it back the phone will become overheat

Thanks for the info mate! Shall try it!

Bad luck. My C6806 GPE stuck at Google screen after updating to 4.4.3 yesterday. Anyone know how to reset back to factory via hardware buttons? I can go into Fastboot but none of the Sony tools will recognize it. I believe these tools are looking for Sony specific ROM IDs.

anyone facing issue on the phone which it will automatically open and close apps? Thanks

Use flashtool to flash firmware since you can boot into fastboot mode. Connect the phone only after you have launch flashtool and you see prompt to connect phone
I have similar experience before

First time hearing such issue. Probably your ext sdcard defective - try using another card

Never ! What type of app ? Sounds like action from malicious app causing such

It will randomly open any apps and automatically typing in the keyboard

faulty digitizer or water/grease on your screen..

check with this in dialer

*#*#service#*#*

under touch screen