Credit check for prepaid cards
Intro
The query of the remaining credit balance of prepaid cards can be done via USSD. USSD is a GSM protocol like SMS to exchange information and messages between mobile and mobile network. The codes are entered via keyboard and send with the green dial key. The GSM network recognizes, that it's a code and not a phone number and replies to it.
Overview
| Provider | Credit Balance | Validity |
|---|---|---|
| e-plus | *100# | |
| o2 | *101# | *102# |
| Telekom | *100# | *100*1# |
| Vodafone | *100# |
Areacodes of German Mobile Network Providers
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