FYI, if you use the version of Tango that comes pre-installed on the phone, you can only Tango for video calls over wi-fi.
To make video calls over 3g/4g/LTE, uninstall it and then install the non-Nokia version from the market.
Viola!
To make video calls over 3g/4g/LTE, uninstall it and then install the non-Nokia version from the market.
Viola!