Yes, carrier billing will be set as the default payment mode if you are using the same Apple ID on different Apple devices. Do note that for verification purposes, a One-time-password will be sent to you before any purchase is made.
Yes, carrier billing will be set as the default payment mode if you are using the same Apple ID on different Apple devices. Do note that for verification purposes, a One-time-password will be sent to you before any purchase is made.