WhatsApp recently updated its Android and iOS mobile apps with a series of new features. It has now turned its focus towards Windows Phone users.

Despite the company's decision to end support for older Windows Phone versions, WhatsApp rolled out an updated version of the app to include features like video-trimming and PDF-sharing to Microsoft's mobile platform.

The update brings the WhatsApp version to v2.12.344 and includes two main features that widen the scope of sharing files beyond photos and videos. Windows Phone users can now send documents to other users, which is an improvement from the previous update that allowed users to only receive them, Phone Arena reported.

Another important change is the ability to trim a video before sharing it with friends and co-workers on the world's largest messaging platform. Users could earlier compress the size of the video to make it easier for sharing over the platform. The new video-trimming feature makes it even simpler to choose what part of the video to share.

The latest WhatsApp update is not available for Windows Phone 7.1 devices, which the company said would reach end-of-support by the end of this year. Users of older Windows Phones would be left with no choice but to upgrade to a newer version of the device or find an alternative to WhatsApp, like Line, WeChat or BBM.

WhatsApp for iOS is a step ahead of other versions in terms of getting new features. Earlier this week, the iOS client was updated with a new option that would let users allow media content from specific contacts, view starred messages separately, and save them while clearing chat history and in-app notification to quickly reply to messages.

WhatsApp recently achieved a major milestone, joining the billion-user club like its parent company, Facebook. Last month, WhatsApp shared statistics on users' activity on the platform, which included 42 billion messages sent and 1.6 billion photos shared each day. The app is looking to improve security by encrypting user data, including calls.