Send your GSM service (http://gsmservice.eu) SMS simply by WebSMS on your mobile phone (use WLAN or data plan)
Configuration in only 2 steps:
1.) First get free "WebSMS" from the Google Play Store in order to use this connector.
2.) In WebSMS go to Preferences "Connectors" and configure the GSMservice connectors Login and Password
Have fun saving money with this free app!
Please post problems on the WebSMS project page.