Share your experience!
Hi! Can anyone help me? My contacts won't appear on my phone book even after I import them from my internal memory. Also, when I checked my messages, all of my contacts were already registered. I don't want to update my phone again for the fear of losing EVERYTHING.
Thanks in advance! Hopefully, someone would answer me. Getting a little desperate here. 
Solved! Go to Solution.
try this
phonebook > menu > filter > check SIM card or internal memory or google
Don't forget to mark the Correct Answers & Helpful Answers
for future reference
Update Service (SUS)
http://www.sonymobile.com/gb/tools/update-service/
http://www-support-downloads.sonymobile.com/Software%20Downloads/Update_Service_Setup-2.11.12.5.exe
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
Don't forget to mark the Correct Answers & Helpful Answers
It worked! Thank you so much!!!! 
anytime