From the drop-down menu, select 'GSM Auto (PRL)'. Click on 'Turn off the radio'. Finally, restart your phone. Credit Technobezz. Phone dialer - *#*#4636#*#* See here formore iPhone and Android codes. Turn VPN Off (Or VPN APPS) ...
you might need to tweak things to get it working properly. In that case, download theNetworkapp. Take a look at the radio mode, and try switching fromCDMA/LTE PRLtoGSM/LTE Auto, then head intoSettings > Wireless &
Many times signal issues occur due to downgraded software. When your Android phone has an update available it will send a push notification to you. In case you don’t receive any such update then you’ll need to check that manually. To check it, go to Settings > About device > Software...