Share your experience!
I am having very strange issues with my phone.
1) The settings get reset automatically. Like Diaplay auto rotate. I always have to untick the option after few minutes/hours.
2)THE VIBRATOR IS VERY very MILD.Cannot sort out anything even if its in the pocket.
DONT TELL TO DO FACTORY RESET OR REPAIR. TRIED IT ALREADY MANY TIMES.
THE BAD THING IS GOT NO SERVICE CENTER HERE
PLEASE HELP SOMEONE
did u flash ur device or sus???
try reinstalling tthe firmware from d means which u had tries earlier..it might help..
tell me after flashing or running SUS
1. Before you start you have to download the PC Companion software from http://www.sonymobile.com/gb/tools/pc-companion/
and install it on your PC.
2. Once installed on your PC, double-click the PC Companion icon on your desktop to start the update.
Note! For some models you will be prompted to do a backup prior to the update and then restore.
3. Install and open PC Companion then select Support Zone.
4. Phone Software Update.
5. Start.
6. Repair Phone
7. Continue
8. Accept data removal
9. Next
10. Wait for prepare
11. Select Phone
12. Follow the connection steps
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Man seriously I know all these things. At least if not the double click part. Read the post says tried factory reset and repair already
Done many times flashed french indian and what not
have you tried "settings reset" ? 
lol. its useless. Better options are factory reset and still better is repair
I have a friend which had a similar problem on a Samsung phone and "settings reset" solved it
Lets try it then