You are downloading the Chat for Steam XAP file v22.214.171.124 for Windows Phone. Chat for Steam is a free and useful Social app: The only working Steam Chat app for Windows Phone! Stay connected to your Steam friends wherever you are. • Supports friend tags / groups • ... You can now download the offline XAP file to install & try it.
Download Locations for Chat for Steam 126.96.36.199 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Chat for Steam XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.