Factory reset when device is pattern locked

[RizkyOcta]

How to solve this?
If I want to reset, how to reset it?
I've tried use the method Home+volume up/down+power button but it seems Sony Xperia pro doesn't have this feature

[Nabeel]

There is no way but to reinstall the software present in your phone.

Backup everything as it will erase all data on phone (sms, contacts,apps)
Update/Repair your phone via SUS

SUS ( Sony Update Service) ... download and install it on pc and follow the on-screen instructions

http://www.sonymobile.com/global-en/tools/update-service/

[RizkyOcta]

Thanks for the advice, bro