Found following solution working on OTA-12:
Within Terminal: /usr/share/ofono/scripts ./test-network-registration /ril_0 default
Switches back to hsdpa if available without disconnection from the network.
Testing with ping 8.8.8.8
If there is no reply the network manager service hangs, then following solves the problem sudo service network-manager restart
Found following solution working on OTA-12:
Within Terminal: ofono/scripts network- registration /ril_0 default
/usr/share/
./test-
Switches back to hsdpa if available without disconnection from the network.
Testing with
ping 8.8.8.8
If there is no reply the network manager service hangs, then following solves the problem
sudo service network-manager restart