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.3G2 Files

Used primarily by mobile (cellular) phones, the .3G2 file format is what is known as a "multimedia container" format. In essence it is a simplified version of the MP4 file type and was created through the 3rd Generation Partnership Project and 3rd Generation Partnership Project 2. The Partnership Project's primary goal was to standardize the mobile phone file format implementation across several countries - the result was the .3GP and .3G2 file formats.

By definition the 3G2 file "container" is comprised of both audio and video components which can be stored and viewed on mobile phones. The .3G2 file format also defines the bandwidth and sets out the image size so when the video file is played it is the appropriate size for the mobile phone screen.

In addition to simply being played on a mobile phone, .3G2 files can also be transmitted to other mobile phones and other electronic devices over digital communication networks. The .3G2 file fundamentally is an upgraded version of the .3GP file which pioneered the streaming of video and audio over the Internet - or in this case across mobile phone networks.

.3G2 Viewing and Playback

The rich media created and stored in the .3G2 file format can be viewed on most mobile phones that have multimedia capabilities. These .3G2 files can also be transferred to and viewed on your PC or laptop - as long as you have the correct multimedia application installed which can decode and play the .3G2 file. There are various third party software applications available that can open the .3G2 file extension - Windows Media Player is likely the most popular because it comes pre-installed on Windows-based PCs and laptops. The Apple QuickTime player is also very popular since it will run on both the Microsoft Windows and Apple OS-X Leopard Operating Systems.

.3G2 Technical Specifications

The technical specifications of the .3G2 file extension:

Video Codecs: MPEG-4 Visual Simple Profile (also known as basic MPEG);
Video Conferencing H.263 Profile 3 and enhanced MPEG and video coding: H.264;
Speech: Adaptive Multi-Rate codecs.

Transferring .3G2 Files

The video files you take using your mobile phone are stored on the memory card of the phone and can be transferred to your PC or laptop by using a card reader or Bluetooth wireless connection. Transferring the files from your mobile phone will enable you to safely store the information and enable you to utilize multimedia or video conversion software to customize the video and/or convert it from the .3G2 format to another format (i.e. .AVI, .MOV, .MPG).

Common Playback Issues

There are primarily two common situations you will encounter when trying to view .3G2 files - one, they will not playback on your phone; and second they will not play when transferred onto your PC or laptop.

If you have taken video using your mobile phone and it will not play the file then it is quite possible there a firmware or software problem with your mobile phone. An appropriate course of action would be to visit the retailer where you purchased the phone and have the dealer perform a diagnostic review to determine the problem. Another option would be to "reboot" the phone in order for it to re-establish its installed baseline functions. The Apple I-phone is particularly good at re-establishing primary functions after being re-booted.

If the mobile phone will not play a file that was transmitted to the phone from another mobile device or was transferred to the phone from your PC or laptop - it is likely the case that your phone does not have the correct, or most current version, of the codec required to play back the file. Converting the file to the format "understood" by your mobile phone should resolve this issue - there are several excellent video converting software applications available designed to perform this function.

If you have transferred your images and video from your mobile phone to your PC or laptop and are unable to view the file there could be a number of reasons why the file will not play:

the software required to play the file is not installed;
there is a file extension-related problem which will not allow the software application to play the file;
the Microsoft Windows Registry has become corrupted or is malfunctioning - which will not allow the file to open; or,
the codecs required to play the file are outdated or incorrect.

Solutions

Often the simplest solutions to .3G2 file play back issues are to install the correct version of the software needed to play the particular file type. However, in many cases the software may already be installed but a malfunctioning Windows Registry interferes with the computer's Operating System and the application does not recognize the .3G2 file extension. Fortunately Windows Registry-related errors can be resolved by automatically cleaning and optimizing the Registry - a reliable registry cleaner will go a long way to keeping your Operating System and Windows Registry working smoothly.

Other Risks

There is always a security risk involved in sharing or transferring files - particularly over an open network such as a cellular network. In addition to the fundamental risk of the network being compromised - many mobile phones are equipped with Windows-based or Symbian Operating Systems which are susceptible to virus attacks similar to what can happen to computer systems.

There are various transport methods implemented by virus writers, and some of which can include transferring of malicious codes from mobile phones to computers as a way to spread infection. It is always recommended to implement the best security practices you can to avoid these problems. The simplest way to reduce these risks is to only open files from sources you trust and to install updated security tools including: operating security patches; software hotfixes, a reputable anti-virus security application, anti-spyware or malware software, privacy controls and data recovery software as well as updates for all installed applications.