I got a new phone Thursday 20th, Umidigi F1. Its picking up 3G and 4G ok but it asks me if I want to join Three in the notifications when the phone starts, it then loads up a Three webpage. Also when I run a USSD: *100*# I get 'Connection problem or invalid MMI code'.
Does it take a few days for USSD codes to work? Will the connect to Three message go away?
Thats weird about the "join Three" thing but that probably because its not a Three phone.
pretty sure all the USSD codes don't work anymore and you have to text the relevant word. What are you trying to get with the USSD code?
@aindriu found the info for the USSD:
All the new instructions are there.
Chilli_Pepper thanks for posting that information but do the USSD/MMI codes no longer work?
I get a 'Sign into three' message for 4G data in the notification area. It brings me to the Three website, it doesn't seem to go away.