Phone number format for Serbia: 3816....
Phone number format for Austria: 436...
this app allows peer2peer sending SMS messages - in exchange for 50 sms within the country where you are,
You can send the same number of messages in any of the supported countries
Supported countries: Serbia, England, Austria, Bosnia and Herzegovina, Netherlands, Spain, Romania, Germany, Turkey, France, China, India, Albania.
Check soon, the list of supported countries is growing.