is is useful to enable data saver on my phone?how much mb can it save per day roughly?

[AC Question]

i am sumsung galaxy S7 edge

 

[Javier P]

Welcome to the forums. It will depend on your usage. This article will help you to understand how this new feature works.

Android 7.0: Data Saver will prevent overages on cheaper plans https://www.androidcentral.com/android-70-smart-wireless-data-saving