Share your experience!
Snapchat has stopped working since the update, plus my phonebook still doesn't work after going in setting and clearing the data etc etc or running a repair???
Sorry to hear that you have issues after the update-
Have you tried to uninstall and then install the app again after the update? This may be needed with some apps when you update Android.
Regarding contacts, please continue that discussion in the first thread: http://talk.sonymobile.com/t5/Xperia-Z2/phonebook-contacts-not-working-since-update/m-p/972365