Just had an oddity on my Galaxy S3 phone – I had no data connectivity over the air!
I tried the typical restart and disable/enable Airplane mode with no avail.
How I fixed it (some steps may be optional/redundant – I don’t know):
- Update PRL – Settings -> More -> System Update -> Update PRL
- disable WiFi
- disable phone data – Settings -> Connection -> Data Usage -> Mobile Data
- enter Airplane mode
(in other words – shut off everything)
- power cycle the device to force a full reboot
- come out of Airplane mode
- re-enable phone data
Whew – see the 4G/LTE icon…
I left WiFi disabled because there were some comments that WiFi coming in and going out may have a bug in the new Android (I’m using KitKat 4.4.2).