Zain Sam3hom is an Android app developed by Zain SA that allows users to personalize their caller experience. The app offers a unique feature that replaces the traditional dial tone with ringback tones of the user's choice. The app is free to download and use.

With Zain Sam3hom, subscribers can change their ringback tones, assign tones to special contacts, send gift tones to others, copy tones of other subscribers, and activate Sam3hom Azan. The app provides a variety of ringback tones, including popular songs, music, and funny sounds, allowing users to entertain their callers while waiting for the call to connect.

The app's interface is user-friendly, and the process of setting up and changing tones is straightforward. However, the app is only available to Zain customers, limiting its accessibility to a wider audience.

Overall, Zain Sam3hom is a useful app for Zain customers who want to add a personal touch to their caller experience. The variety of ringback tones and the ability to customize them make the app stand out from other similar apps in the market.