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MOBI at a glance
MOBI
MOBI came from the Mobipocket ecosystem before Amazon's Kindle platform made related Kindle-family formats more famous at consumer scale.
3G2 at a glance
3G2
3G2 belongs to an era when mobile ecosystems were more fragmented across standards families, carriers, and handset capabilities.
Format comparison
| Feature | MOBI | 3G2 |
|---|---|---|
| File type | Ebook | Video |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2000 | 2004 |
| Inventor | Mobipocket | 3GPP2 |
| Status | active | active |
| Primary use cases |
|
|
When to use each format
When to use MOBI
- Your source file is already in MOBI.
- Preserve source expectations before exporting to 3G2.
- MOBI is commonly used in ebook workflows.
When to use 3G2
- Your target workflow expects 3G2.
- Improve delivery compatibility with 3G2.
- 3G2 is commonly used in video workflows.
FAQs
Why convert MOBI to 3G2?
Convert to 3G2 when preserving compatibility with legacy CDMA handset recordings, telecom media archives, or workflows that explicitly expect 3GPP2-style mobile video.
It is useful for migration and recovery of old phone clips.
For current playback and sharing, MP4 is almost always the better destination.
What changes when converting MOBI to 3G2?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting MOBI to 3G2?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.