One of the main issues with 3GP files now is sound that’s absent, mostly due to modern players and editors lacking AMR support, causing them to load the video but reject the audio without notice, making it seem like the file has no sound even though the codec is just not accepted.Another major factor is the move toward consistent formats, unlike early mobile days when networks needed different file types; now MP4 rules because of broad compatibility and flexible performance, so producing 3GPP2 would only complicate workflows, leaving it mostly in old backups, MMS logs, voicemail systems, and regulated environments that preserve original formats for historical integrity.Saying 3GPP2 puts small size and reliability ahead of image quality reflects a purposeful limitation made during a period when CDMA networks were slow and unstable, bandwidth was costly, and phones had minimal hardware power, requiring aggressive compression, low frame rates, and speech-centered audio so clips would reliably transfer and play, even if that causes noticeable softness and pixelation today.easy 3GPP2 file viewer mattered just as much as size, so 3GPP2 included timing and indexing designed to survive network drops, allowing playback to stay synchronized even under poor conditions, meaning a low-quality video that ran smoothly was better than a high-quality one that stalled, leaving us with a format that looks basic today but persists in archives because it remains stable, lightweight, and accessible decades later.