Insert the files to be converted into the Tasks list by clicking the "Convert Files" button.
Select the file(s), you want to convert, in the tasks list by selecting the first task you wish to convert, holding shift and then selecting the last task you wish to convert. If you wish to add tasks individually, hold the control button while selecting the tasks you wish to add to the DVD.
Select "Smartphones (3GP)" from the format drop down list. M2Convert Professional supports converting.
If you wish to add any effects to your converted file, M2Convert Professional enables you to add video and audio effects to your files.
Once you are set, click start converting.
Other items of interest concerning the 3GP video format and M²Convert