1.Check the SIM card on another module and see if its connecting there.
2.Place the SIM card on a mobile and see if the card is pin disabled and it works well on the phone.
3.Try to set manual APN on the module from LiveU Central.
4. Reflash/Upgrade the unit.
5. Send the mcc-mnc/APN value to LiveU Support and they will update the apns.txt file on the unit. The additions made will be updated in the future released versions.
6.In case issue persists, contact LiveU Support. We will be more than happy to help you.