Choosing network mode for my mobile phone
You can select which network modes your mobile phone can use, eg. 3G or GSM. Your choice determines the data speeds you can achieve.
Slide your finger down the display starting from the top edge of your mobile phone.
Slide your finger down the display starting from the top edge of your mobile phone.
Tap the settings icon.
Tap Tethering & Networks.
Tap Mobile networks.
Tap Network mode.
Tap GSM / WCDMA / LTE auto, GSM / WCDMA auto, WCDMA only or GSM only.
Tap the Home key to return to the home screen.