Our services work regardless of geographical location, all you need is a working connection (3G/4G/Wi-Fi). Once you sign up you can make and receive calls independently of where you (and the other person) are.
However, please note that if you use 3G or 4G networks while abroad you will most likely incur roaming charges for the data usage. Check with your carrier before using data services abroad.
How do I dial internationally?
To dial internationally using Silent Phone you need to have Silent World enabled on your account buy purchasing Credit.
If you already have Credit in your account, launch Silent Phone, press and hold the zero key until the plus sign icon appears in the dialog box and then dial the number including the country code.