You are downloading the MobileVOIP XAP file v188.8.131.52 for Windows Phone. MobileVOIP is a free and useful Social app: MobileVoip lets you make cheap calls to national or international destinations. Save on your mobile phone costs right away by using this ... You can now download the offline XAP file to install & try it.
Download Locations for MobileVOIP 184.108.40.206 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline MobileVOIP XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.