Mtn sim upgrade is like a sim swap
You must drop your old sim
And put new one they give in Mtn shop or Mtn office
When u do that if still showing you 3g go to settings on...
Hi Chinwe, when you visit MTN office to do SIM upgrade, a new SIM pack will be given to you. You do not need to buy it. MTN SIM upgrade is free.
To upgrade your MTN line to...
Hi Garba, MTN SIM upgrade is restricted only at their office, they do not have provision for online or self SIM upgrade.
You can dial *123*7*1# to get information on the...
