Share your experience!
I have bought before some days the sony aqua M4, after i activate wifi or data, some times the phone freeze and overheat. I cant do nothing until the battery empty so i charge it and restart phone, that happens 2-3 times per day. i sent it to sony service and they told me it was a software problem and they make a software update and the phone is ok, but i didnt read anyware about release of new software update for M4. when i activate data again several times during day the phone freeze again and overheated.
it'll be wise to reinstall the latest update with PCC
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
If you read what i say, you see that there are no latest updates for the phone, the phone is up to date when i connect with PC, also i did it, and a make a reset fot the phone by myself and when i sent it to sony service. They told me that the phone is ok and when i came back home and use the phone it freeze again and overheated so much that its hard to tach it.
Hi zofos, welcome to the community!
I advise following @uliwoolys advice as not only does this reinstall the latest update - it reflashes the operating system and is quite likely to help. If it does not help I then would advise contacting Sony Xperia Customer Care in your region (just click the link in my signature for details).