3GP files are designed for use on mobile phones. Usually you will see this type of files playing on mobile. But what is happening if you have one of these file on your computer and you want to play it? I present 2 ways tested by my and all are free.
1. Install BSplayer software from our page
At the final of installation you will be asked if you install some codecs. Click ok to install them all, otherwise you cannot play all videos.
Besides playing 3GP files, BSplayer is a good player for many types of video files, so is useful to keep it on your Windows computer.