chaimzalman Have you checked your APN settings?
The only other thing I could suggest is to check if the software version is up-to-date (L125DL10h should be latest). Or try a factory reset. I had a strange Wi-Fi password issue that was only solved with a factory reset. Furthermore, a factory reset via the hidden menu should be more thorough than via the normal settings menu. However, if your phone has already been unlocked make sure you still have the unlock codes for it, as they may well need to be reentered if factory reset is done via the hidden menu.
P.S. On the final screen in the hidden menu, you'll see the label "Factory Reset (R&D Only)" to differentiate it from a normal factory reset.
