google play not working with mobile network

[uzu]

I cannot download or update any application when I am connected with mobile network

[Uliwooly]

That's quite odd, what if you remove the google account 

settings > accounts > google 

restart your phone 

add the account once again

if that doesn't work then repair your phone with PCC

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

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

[Lord_viridis]

I'd be inclined to agree with uliwooly.
The HTC that I had do it, would only sort out with firmware reinstall aka for Sony, pc companion repair.

[uzu · Accepted solution]

After speaking with support Center, I reset all app preferences (settings/apps/reset app preferences) and restarted the device. It started to download! Problem solved so far...