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Convert FLV to 3G2 - Flash Videos for Mobile Devices

Transform Flash videos into compact 3G2 format for mobile playback.

Step 1: Upload your files

You can also Drag and drop files.

Step 2: Choose format
Step 3: Convert files

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Flash Videos Won't Play on Your Phone?

FLV files were the standard for web video in the Flash era, but they don't work on mobile devices. If you have old Flash videos you want to watch on a basic phone or CDMA device, converting to 3G2 is your solution.

3G2 is a mobile video format designed specifically for phones with limited storage and bandwidth. In our testing, 3G2 files are typically 60-70% smaller than the original FLV while maintaining acceptable quality for small screens.

How to Convert FLV to 3G2

  1. Upload your FLV file - Drag and drop or click to select your Flash video
  2. Select 3G2 output - Choose 3G2 as your target format
  3. Download your video - Get your mobile-ready 3G2 file

The entire process happens in your browser. No software installation required.

FLV vs 3G2: Technical Differences

FLV (Flash Video) was designed for streaming on websites through Adobe Flash Player. It typically uses Sorenson Spark or VP6 video codecs with MP3 audio.

3G2 (3GPP2 file format) was built for mobile phones, particularly CDMA networks. It uses H.263 or H.264 video compression with AMR or AAC audio. The format prioritizes small file sizes over maximum quality.

  • File size - 3G2 files are significantly smaller than FLV
  • Compatibility - 3G2 works on older mobile phones; FLV requires Flash Player
  • Resolution - 3G2 supports lower resolutions optimized for small screens
  • Audio - 3G2 uses efficient mobile codecs like AMR-NB

When to Use 3G2 Format

Older CDMA Mobile Phones

If you have a basic phone that doesn't support modern video formats like MP4, 3G2 is often the only option. Many older Samsung, LG, and Motorola CDMA phones only play 3G2 video.

Limited Storage Space

3G2 files take up minimal space on your device. Perfect for phones with limited memory where every megabyte counts.

Slow Network Transfers

The compact size makes 3G2 ideal for sharing videos over slow mobile connections or messaging apps with file size limits.

Legacy Device Testing

Developers working on apps for older devices or retro phone emulators sometimes need video content in 3G2 format for testing purposes.

3G2 vs 3GP: Which to Choose?

Both formats serve mobile phones, but they're designed for different network types:

  • 3G2 - Developed by 3GPP2 for CDMA-based phones (Verizon, Sprint in the US)
  • 3GP - Created by 3GPP for GSM-based phones (AT&T, T-Mobile in the US)

If your phone uses CDMA technology, choose 3G2. For GSM phones, FLV to 3GP conversion may work better. When in doubt, try 3G2 first - it generally has broader compatibility with older devices.

Quality Expectations

3G2 prioritizes compatibility and file size over visual quality. Videos will look good on small phone screens, but if you're planning to watch on a modern smartphone or computer, consider converting to FLV to MP4 instead.

For basic phones with screens under 3 inches, 3G2 quality is perfectly adequate. The format was engineered for exactly these displays.

Works in Any Browser

Convert FLV to 3G2 directly in your web browser:

  • Windows, Mac, Linux, Chromebook
  • Chrome, Firefox, Safari, Edge
  • iPhone, iPad, Android tablets

No downloads or installations needed. Convert from any device with an internet connection.

Pro Tip

Before converting, check your phone's user manual for supported video specifications. Some older phones have specific resolution and bitrate limits. Converting at settings that exceed these limits may result in videos that won't play.

Common Mistake

Assuming 3G2 will play on any phone. It's specifically for CDMA-based devices. GSM phones typically need 3GP format instead. Check your carrier type before converting.

Best For

Older CDMA mobile phones, basic feature phones, and situations where you need the smallest possible video file size while maintaining playability on mobile devices.

Not Recommended

Modern smartphones and tablets that support MP4. If your device was made after 2015, you almost certainly want MP4 instead of 3G2 for better quality and compatibility.

Frequently Asked Questions

3G2 is a video container format developed by 3GPP2 for CDMA-based mobile phones. It uses efficient compression to create small files suitable for devices with limited storage and slow network connections.

FLV files require Flash Player which is discontinued and doesn't work on mobile devices. Converting to 3G2 makes your Flash videos playable on older mobile phones, especially CDMA devices that don't support modern formats like MP4.

3G2 is designed for small phone screens, so quality is optimized for mobile viewing rather than HD displays. On older phones with small screens, the quality is perfectly acceptable. For modern devices, consider MP4 instead.

3G2 was designed for CDMA networks (like Verizon and Sprint) while 3GP is for GSM networks (like AT&T and T-Mobile). 3G2 supports additional audio codecs like EVRC and QCELP that 3GP doesn't. Choose based on your phone's network type.

3G2 files are typically 60-70% smaller than the original FLV. A 50MB FLV video might convert to a 15-20MB 3G2 file, depending on the content and quality settings.

Yes. Upload multiple FLV files and convert them all to 3G2 in a single batch. This is especially useful when preparing a collection of videos for transfer to a mobile device.

3G2 supports resolutions from 128x96 up to 352x288 (CIF). While higher resolutions are technically possible, the format is optimized for small mobile screens where lower resolutions are sufficient.

Yes. The conversion happens in your browser - your files aren't uploaded to any server. They stay on your device throughout the entire process, ensuring privacy and security.

Most modern smartphones use MP4 instead. 3G2 is primarily for legacy devices, basic phones, and specialized applications. If you have a smartphone from the last 10 years, MP4 is the better choice.

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