mobile_network) can vary by endpoint — use the currency-specific rules on Pay and Onramp.
For per-transaction amount limits by country, see Limits.
Kenya
SafaricomAirtelAll banks
DR Congo
Airtel MoneyMpesaOrange Money
Uganda
MTNAirtel
Malawi
AirtelTNM Mpamba
Nigeria
All banks
Ghana
MTNAirtelTigoTelecel
Ethiopia
TelebirrCbe BirrMPESA