Can You Use a Nigerian MTN Recharge Card in Ghana?

No, you cannot load a Nigerian MTN recharge card onto a Ghanaian MTN line. Recharge cards (vouchers) are strictly country-specific. Each MTN operation—MTN Nigeria, MTN Ghana, MTN South Africa, etc.—functions as a separate legal and technical entity with its own billing systems, numbering plans, and regulatory frameworks. A voucher purchased in Nigeria will only work on the MTN Nigeria network.

If you're in Ghana and need airtime, you must purchase a MTN Ghana recharge card (or use mobile money, banking apps, or the *170# USSD menu). Similarly, a Ghanaian card will not work in Nigeria.