I'm on 8.1 . Seems like I've stopped receiving picture text. MCD where is that diag tool? I couldn't find it the app store.
Direct to the app:
http://www.windowsphone.com/s?appid=93a560c9-1b50-41d1-b605-431ef28b7e80
WPCentrals write-up about it:
http://www.wpcentral.com/help-make-windows-phone-better-official-diagnostics-app