# Video iOS Previous Releases

## Version Support Policy

| How long do we support each version?                                                                                                                                                                                                                                        |
| --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| The Twilio Programmable Video SDKs use [Semantic Versioning](https://www.semver.org/). Twilio supports version N-1 for 12 months after the first GA release of version N. We recommend you upgrade to the latest version as soon as possible to avoid any breaking changes. |

## Deprecation Notice - 3.x and earlier Versions

| Notice                                                                                                                                                                                                                                         |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **All Programmable Video iOS SDK 3.x and earlier versions are deprecated**. Version 5.x is the latest version of the Programmable Video iOS SDK. Please see the [Getting Started Guide](/docs/video/ios-getting-started) for more information. |

This page provides links to documentation to prior releases of the Video iOS SDK.

## Video iOS 4.x

* [Migrating from 3.x to 4.x](/docs/video/migrating-3x-4x-ios)
* [Getting Started](/docs/video/ios-v4-getting-started)
* [Configuring Audio, Video Input and Output devices](/docs/video/ios-v4-configuring-audio-video-inputs-and-outputs)
* [Video Source APIs](/docs/video/ios-v4-video-source-apis)
* [Screen share](/docs/video/ios-v4-screen-share)
* [Using the DataTrack API](/docs/video/ios-v4-using-the-datatrack-api)
* [Using Twilio Video side by side with WebRTC](/docs/video/ios-using-twilio-video-side-side-webrtc)
* [Changelog](/docs/video/changelog-twilio-video-ios-version-4x)
* [API Reference](https://twilio.github.io/twilio-video-ios/docs/latest_4.x)

### Archived Versions

For historical reference, the following SDK versions have reached end of life and documentation is no longer maintained:

* **iOS SDK 3.x and below**: Support ended according to the [documentation retention policy](/docs/video/platform-sdk-support-policy#documentation-retention-policy)

For the latest SDK documentation, see the [Getting Started Guide](/docs/video/ios-getting-started).