Data OK - but no voice connection
My unlocked S3 will no longer make/receive phone calls. Searching for (and then trying to register on) mobile networks results in "unable to connect try later"
IMEI code is OK (not starting with 00)
Different sim card- same results
Flashing rom to latest stock xxemg4 rom etc - same results
Now the weird thing is if i add an APN to my service provider - i get data connection (email/twitter) work - but cannot register on voice network
Is this a hardware radio issue? Have any of you guys seen this before? Any advice?