keep returning to home screen

[jaybowski]

I just bought Xperia z1 for about 3 weeks now. Before that the phone are running perfectly but now it start to have problem. Whenever I opening an app or browsing, the phone tend to close the running program ans return to home screen. I have reboot it once in a while but the problem persist in coming
coming. Is there any way to resolve my problem?

[Uliwooly]

Seems like an app acting up, you can install or re-install the latest update with SUS or PCC

[Uliwooly]

Update Service (SUS)

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

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

[jaybowski]

Already done the pcc quite a few time but the problem still persist

[Uliwooly]

Does it happen as soon as you repair the phone or after you install apps?