I have a Samsung S5 from South Africa now in UK, how can I add the MTN code?

[AC Question]

I have a samsung S5 from south africa now in UK

How do I add the MTN text code so that I can send and receive texts whilst in UK?

 

[ironass]

USSD codes that every MTN customer should know

"MTN Roaming customers will not always be able to use the USSD service as some GSM networks do not support USSD as a bearer. It is therefore advisable to check the country you intend visiting to see whether the MTN partner network operator supports USSD."