Steam has just pushed an update for their Windows Phone app bumping it to version 2016.902.2152.0 . The previous update had brought in a crashing bug, which is fixed in this update.
Currently the steam app features,
- Ensure the security of your account with Steam Guard multifactor authentication;
- Send and confirm trades with friends;
- Sell your in-game items in the Steam Community Market straight from your Inventory;
- Browse the Steam storefront and keep up with the latest games, promotions, and sales;
- Remotely download and install your games straight to your PC at home.
Download it from the Windows Store ,
Source : MSPU