Promo codes and gift certificates
Activate a code, buy and give a certificate
Promo code
Open "Promo codes", enter the code and tap "Activate". An accepted code appears in the list right away, together with its validity and what it applies to. A code works once, unless its terms say otherwise.
If a code isn't accepted, check the keyboard layout and the expiry date: expired and already used codes are rejected.
Certificates
A certificate is a gift for the network's services: you buy it in the app and pass it on. Open "Certificates" → "Buy", choose the value or the program, pay — the certificate appears in your list, ready to be sent.
The recipient activates it in their own app on the number you sent it to. The expiry date is printed on the certificate itself.