This app drained over 43 Gigabytes (GB) of my data even while it wasn't in use on my Samsung Galaxy Note 9. My phone was overheating & draining battery 🔋 rapidly even when the screen light is off & the phone is not in use. Went into data usage in settings & saw Call app used out all my data from my network Postpaid plan. Very disappointing & I am uninstalling because I don't want this to happen again.