Oi Som de Chamada is an Android app that allows you to customize your phone's call waiting sound. Say goodbye to the boring "tuuuuu" sound and choose from a variety of national and international music, pranks, team anthems, and funny sounds for your friends to listen to while they wait for you to answer the call.

With Oi Som de Chamada, you can personalize different sounds for different friends or make a selection that plays for everyone who calls you. The app is exclusively available for Oi customers, and you can also activate it by sending SOM to 5656.

Overall, Oi Som de Chamada offers a fun and unique way to make the waiting time for answering a call a special moment for your friends. Customize your call sounds and get ready for everyone to comment and have fun!