You can read more here : How to Access/Benefit from MTN Cameroon 4G LTE Network -smart Mini L860 4G Phone
After getting your sim and phone, you might not be able t have internet access. This can be either because the phone is not properly configures or because you don't know the best options to get 4G data.
Internet Settings for MTN 4G LTE
The internet settings we have are for 4G LTE settings are for Android phones as of now. Feel free to share with us if you know how to set up 4G internet for iOs