CSipSimple is a SIP client that allows you to use your Gradwell account on your mobile.
Gradwell is setup as a provider in the app, meaning that all you need to know to configure the app is your extension number and password.
After downloading the app from the Android Play store simply start it up and click Add account. Select Gradwell from the list of providers in the United Kingdom, and when prompted enter your seven digit extension number as the User name and the extension password.
If you have any problems using the app, please refer to the CSipSimple FAQ page.
VoIP over 3G
Please note that not all mobile networks support the use of VoIP over 3G, and that call quality may vary on each call. Therefore our customer services team are unable to support any issues you have whilst attempting to make VoIP calls over a 3G network.