why i cant change my screen lock.

[Cheng]

[Cheng]

i dont have any administrator apps...

[Cheng]

the screen lock still cant change

[Uliwooly]

lets try this

remove the SIM card > restart your phone > do NOT put the SIM card back in, do you have access to your phone, if you do, back up everything and then repair it with SUS.

and yes the PUK is from the SIM card's network

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[Cheng]

SUS?

is ok now, i got the puk code from them

[Uliwooly]

Excellent, I would still repair the phone if I was you, you don't have to but it doesn't hurt

[Cheng]

how to repair it?

[Cheng]

i dont know what is SUS

[Uliwooly]

install SUS on your PC > restart your PC > run SUS > turn off your phone > follow the steps, voila, done

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[Uliwooly · Accepted solution]

Update Service (SUS)

http://www.sonymobile.com/gb/tools/update-service/

http://www-support-downloads.sonymobile.com/Software%20Downloads/Update_Service_Setup-2.11.12.5.exe

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

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