Most of the mobile devices will setup automatically, please follow the instructions of below if it fails to connect network.
1. Please ensure if the SIM card has been properly plugged (as SIM 1) into mobile device.
2. Please ensure "Mobile Data" and "Data roaming" settings on your phone are turned on, in good reception area.
3. Please turn-on "Network Selection -> Automatic" in first step and wait for 3-5 mins. If fail, please turn-off auto and select operator manually (Please refer to the plan description for the operator list).
4. Please check device APN settings: For reference only, settings display may has discrepancy on different models.