Windows Phone 8.1 has got the amazing notification center and action center. Here is the tutorial how to restrict others from seeing notifications on locked Windows Phone 8.1
Secure your Galaxy S5 by setting up unlock method, follow this tutorial to easily set a fingerprint scan or lock screen password on Galaxy S5.
Read the steps mentioned in this post to find IMEI number of lost iPhone. A simple guide which help you to get your task done in seconds.