Do I have to change my phone number while abroad?
No, you will keep your regular mobile number even abroad
What are the rates for calls made and received SMS and data usage while traveling internationally using roaming service?
The cost of sending or receiving calls, sending SMS, or using data from abroad depends on the country you are visiting. See our grid for applicable rates.
Download grid here: https://www.mtn.cm/en/mobile-offers/my-plans/roaming-hello-world/