How to Deposit, USSD AIRTEL + MTN Deposit USSD Deposit – Dial *165# on MTN or *185# on Airtel. This payment option can be used without yet holding a Betin Uganda account! Register and deposit money with one quick and easy method with MTN or Airtel. Steps on AIRTEL: Dial – *185# Select – 5 for Payments. Steps on MTN. Dial – *165# Select – 4 for Payments.