The following module enables user to pay for the registration process via SMS-message. The moment user click the registration link he is offered to send an SMS. As soon as the password is activated user can complete the registration process.
Plugin designed for platform version 1.5.2 and higher.
To be able to use the following module you first must register
as well as connecting to sms:key service.
Registration and setup process are absolutely free.
Link: Download plugin
SmsCoin - Best sms-billing for you!