1. go to Settings > General > Profiles > delete any installed APN profile (if present)

2. go to Settings > Mobile Data > Mobile Data Options > Mobile Data Network

Enter APN globaldata (one word small letters no spaces) into sections Mobile Data, LTE and Hotspot if available.

Delete username and password if present.

and find your phone model, go to "Setup Internet"

2. follow the instruction step by step

On step “Enter Internet information” please enter:
Name: globaldata
APN: globaldata

Please DO NOT CHANGE any OTHER fields, DO NOT CHANGE or enter APN type