Something on my smartphone sends a message once a day, sometimes I see a tiny fast dark background popup on the bottom saying it is doing so.
Such application seems related to the SIM card, as the popup I receive is from my cell phone provider/carrier/operator.
One second later I receive this:
The app name is "Servixc3xa7os TIM".
That app package name is "com.android.stk" (I found that using Brevent).
It is an OS App.
It has the exactly same version of "SIM ToolKit" (I guess .stk means that), but at apps list it is in an independent entry with it's own options.
The real huge problem is that, when that popup shows and the screen is locked and remains like that for 8h+, the screen WILL NOT TURN OFF and will spend my battery from 100% to 40% or less and I may depend on having the battery at that time! :(. I usually let it out of the charger, and without that popup it would only spend about 5-10% of the battery.
My smartphone J7 is not rooted, I wonder if that would be the only option?
This other app I think is the culprit from sending the message. It already had SMS disabled but not the phone permission! (I have other app to let me read/send SMS btw)
also the SIM toolkit, I force stop it (and disabled all notifications now 2019):
Final result is: none of these actions above worked, the popup still happens :(