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my phone vibrating not work
i already test with diagnostics tool & use reset factory on my phone
still my phone can't vibrate
anyone have a solution ? :'(
Thx n i can't speak english properly, sorry 
hope u can understand my mean 
Solved! Go to Solution.
You may need to perform a software repair using PC Companion.The process will erase all internal memory.You might need to charge your device for about 1-2 hours before so the device has at least 60% battery.
Make sure the device is not connected to computer or laptop and turned off (sometimes you have to press power button and volume up until the device vibrates 3 times or on some devices you have to press the small button near the SIM tray or on the back of the device).
Open PC companion->support zone->phone/tablet software update->repair my phone/tablet blue highlighted.Follow the steps given,do not connect your phone until prompted to press volume down while plugging USB cable. If PC companion does not start the repair process, you might need to run it in compatibility mode with Windows 7 (in some cases XP).
Have you dropped it or anything like that? You should however take it to a close sony service:
http://www.sonymobile.com/global-en/support/contact-us/
Hey.
I got the same problem. Whenever i get a text message, my phone doesnt vibrate, nor it doesnt show it on the startscreen.
When i get a phonecall or play a game, the vibrate works without problems. The only vibrate issue is the text messages.
And the funny thing is - before i got the new update "Lollipop", the vibrate of text messages worked perfectly. Now its kinda dead.
Are notifications enabled? Do you use the default messages app?
Still nothing happens. The vibrate is activated, but it doesnt vibrate when i receive messages.
Can you check if the same occurs in safe mode?
http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008
Thank you for the guide. But it seems not to work. My phone stil doesnt vibrate, and it doesnt shows on the startscreen. :(..
Try settings-apps-all-messages,force stop and clear data. Restart. Take a backup of your messages before.
Sorry but that doesnt work either
Jesus, this pisses me off
You may need to perform a software repair using PC Companion.The process will erase all internal memory.You might need to charge your device for about 1-2 hours before so the device has at least 60% battery.
Make sure the device is not connected to computer or laptop and turned off (sometimes you have to press power button and volume up until the device vibrates 3 times or on some devices you have to press the small button near the SIM tray or on the back of the device).
Open PC companion->support zone->phone/tablet software update->repair my phone/tablet blue highlighted.Follow the steps given,do not connect your phone until prompted to press volume down while plugging USB cable. If PC companion does not start the repair process, you might need to run it in compatibility mode with Windows 7 (in some cases XP).