How To Recharge On Mtn Airtel Etisalat Glo Vodacom

how to recharge with your service provider.
For mtn subscribers.
You will dial *123# then follow the steps or *555*pin-number# then you press ok or send or call.
For airtel subscribers.
You will dial *126*pin-number# then press.ok or send or call.
for etisalat subscribers.
You will dial *222*pin-number# then call or send or ok.
For glo subscribers.
You will dial *123*pin-number# then press send