1- Go to “Settings”, and then tap “Cellular”.
2- Select “Rightel” in Cellular section.
3- Tap “Voice & Data”.
4- To use RighTel’s 3G network, tap “3G” and to use 4G tap “LTE”.
5- Go back to Settings > Cellular and tap “Network Selection”.
6- If do not find the Rightel network in Automatic mode, turn OFF “Automatic” and select RighTel or IRN 20 from the available options.
In case of using international roaming service, tap “Search Networks” and select the destination operator from the displayed operators.