This partially describes some Windows Phone's I've had: - Fairly small (around 4" though) - Fairly light (not "super" though) - Quite robust, partially due to

This partially describes some Windows Phone's I've had: - Fairly small (around 4" though) - Fairly light (not "super" though) - Quite robust, partially due to plastic case and glass front not fully reaching edges - Acceptable performance with really cheap hardware - All basic apps, including WhatsApp (not sure how long it will still be supported though) About snooping, I think you can disable almost all feedback to MS in WP8, and third-party apps don't stand a chance because they're heavily isolated and inter-app communication as well as global OS features are extremely limited yet, as opposed W10 or other modern mobile OS'. If you really don't care about latest features and lots of apps, then getting a second-hand Nokia Lumia might be interesting for you.