Samsung Galaxy Note 4 — how to uninstall apps

The built-in calendar can't be deleted. It doesn't take up much memory, so you don't need to uninstall it.

Yes , you are right ,

Just hold the apps the if X sign pop up press it. If not you have to change your theme. Just like you want to delete that calendar on your screen. That's all don't bother yourself.

Margaret S.

I did not pose the right question. When I switch on I am told that 27 apps are running in the background, running my battery down and using the processing power. I am briefly offered an app which claims it will deal with the problem .The screen disappears before I manage to make a note of the app name, and anyway I hesitate to instal an app about which I know nothing. I am increasingly frustrated and seek help. I am not technically fluent.
My 5 questions therefore are
1. How do I find which apps are running (in the background or foreground) and which of them were autostarted ?
2 which apps is it safe to delete, or which to kill, (or which would it be unsafe to remove if that is the shorter list!).?
3. How do I control which apps autostart?
4 I seem to have a long list of installed apps, most of which I do not recognise. Searching with google to find what the apps are for is not usually fruitful. Any suggestions of how else to identify the purpose of an app?
5 Using 'settings' I am offered the option to uninstall updates but not to uninstall the app. Is there another way? (Unknown apps include (among many others) Automation test; badge provider; Blue Sea; certificate installer; context provider; CoolEUKor; CSC; DSM forwarding; DSNLawnmo; enterpriseSysScopeSerevice; flashannotateSc vc
; fiipboard; many google apps such as google play moves &TV(which I certainly would not use); Helv Neue S; INDIService manager; kobo; (the list seems almost endless)

So many questions.
Let me try to answer the 1st one. As for my phone, in Settings - Developer options - Running services, I can view and control all currently running services.

Hi Margaret, welcome to AndroidPIT!

The only reason to uninstall apps is actually if you are running out of storage space. Even if Apps are running in the background, they are not draining your battery or using processing power. They are sleeping as long as you are not using them, there's no reason to bother with them.