Hello there. So my Sony Xperia x10 keeps turning itself off. Like whenever I use it, it just shuts itself off and then turns back on. It repeats that process for like 3 times, then it finally boots up correctly. It doesn't matter for how long I use it. Any solution to this problem? Thanks!

SOURCE: sony ericsson xperia x10 unlock code

Hi,

You can get the unlock code by contacting your current service provider customer care department.If your phone is locked you can use any of your friends phone to make this call. The service provider will then provide you the unlocking codes.. Remember that the reason why the codes are provided only thro customer service provider is they will make a check on your name and identity proof at the time of your call. If the information is found to be correct and matching with their data then you will be provided with the codes. Everything is done for free of cost and you are not going to be charged for this process.This is the universal solution and is useful for many customers who are facing these kind of problems. Don't believe in any websites which provides unlock codes. All are fake. Only your service provider can provide these codes.


Thank you !!

SOURCE: How to set MP3 as text message tone on Sony

If you want to set an mp3 or "Custom" tone for your "Notifications" you can dowload an app or...
Connect your X10 to your computer. Pull down the usb notification in top left of screen and mount sd card.
Then go into your phone menu via "My Computer" and either go into media/audio/notifications or create the folders yourself. Remember they must be lower case letters.
Then all you have to do is copy your tone into the "notifications" folder disconnect your phone from your pc and go into "Settings" "Sound and Display" "Notification ringtone" and it should now be in your list with the preset standard tones.

SOURCE: Sony Xperia X10 Unlock Attempt Left

No way of finding out how many times the wrong code has been entered but...

You can still unlock the phone by using
"totalgsm"
software and your data cable that you got with your handset.

You will need to pay for some credits for the software to unlock your phone and your computer needs to be connected to the internet whilst it does it.
It's worth looking around for different prices too. I looked for a c902 and found prices ranging from £25 to £7 after you work out the exchange rate from Dollars to Sterling.
$40 is the starting price see how low you can find it. :)

SOURCE: My Xperia X10 always restart and can't run and open again.

i don't thrust your name you thief:D
no i don't know.. i'm sorry

SOURCE: ive locked the xperia x10 by doing the wrong locki...

well...

If you dont have it, try to sing up for a gmail or google account from other computer, and when you have it your mail accout, you must type it at Xperia........

If not, you must go to a dealer shop, to fix that problem.