How to remove the SIM Toolkit from my phone? (Without root or flashing any ROM) This application is sending a lot of spam to my phone recently, two or three times a day. I deactivated broadcast messages, tried converting USSD pop-ups into notifications to avoid being interrupted (didn't work). Basically, everything I tried didn't work, so now I want to remove it from my phone. Is it possible to do it without root, with ADB or something? I'm not a power user but I have used ADB to give permissions to some apps before.
Connect Your Phone to PC Using Data Cable.
Turn on USB Debugging
Setup ADB Connection
Type 

adb shell

Hit Enter and type again this

pm uninstall -k --user 0 com.android.stk


or    

pm uninstall -k --user 0 com.android.stk2



Application Remove Example Image