3GP stands for 3rd Generation Partnership Project. The 3GP file format is a multimedia container format that is often used for 3G-enabled cellular phones. The 3GP file format is a mobile-friendly version of the "bulkier" MP4 files that are popular for use with desktop and laptop computers. The 3GP format was developed to make file sizes smaller so that they would use less bandwidth, making it easier to stream video and music onto mobile phones.
It is important to note that you do not need a 3G phone to view files with the .3gp extension. Files that are in 3GP format can also be viewed on a personal computer, although the quality of the same file in an MP4 format may be better.
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If you have additional information about the 3GP file format or software that uses files with the 3GP suffix, please do get in touch - we would love hearing from you.