Drop file here. 150 MB maximum file size.
A 3G2 is a multimedia file recorded in an audio and video format developed by the 3rd Generation 2 (3GPP2) Partnership Project. These 3G2 files are designed to transmit multimedia content over the Internet and are used by cell phones to save video files.
An SPH file is an audio file created in the NIST SPHERE format, which is often used in searching speech recognition. Usually contains the apos; recording of apos; a person who speaks. The SPH files can be provided as voice-recognition system entries.
Access powerful and secure free online 3G2 tools to convert, view, edit, merge, split, and compare 3G2 files β all without installing any software. Our tools support the .3G2 (3GPP2 Multimedia File) file extension and run smoothly in any modern browser.
Select a tool below to explore features and manage your 3G2 files directly from your device with ease.
Chose or drag & drop your 3G2 file, click Convert to SPH, and download the SPH file. No registration needed.
Yes, all uploads are encrypted. Your files are auto-deleted after 24 hours.
Yes, our converter retains layout, fonts, and images as accurately as possible.
Fileproinfo converter engine works fast. You can convert 3G2 to SPH in a few seconds to couple of minutes for large size files with complex structure.
FileProInfo support manay file formats that allow you to convert 3G2 to 100s of file formats, without any limit, registration and downloading, 100% free and online 3G2 converter.
All converters in this list are manually verified & 100% free and working properly, however you must use these apps according to their respective terms & conditions.
This tool and page updated at: 12-Apr-2025
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