User Activity

My galaxy store not opening its showGalaxy store keeps stopping
In my J7 Pro When incoming call when I pick the call phone ring continue ringing even after pick the call and no answer from other side after some time call ended without answering. Plz anybody tell me solutions.
My J7 pro show device not certified
There is nothing useful in pie update in j7 pro.If they provide dual volte then it will be useful otherwise disappointing me
What is the icon of my Samsung mobile at status bar. How can I remove it. Plz tell me any solutions