It's a little different now when you have newer android versions. You used to be able to uninstall what ever you want but now you can't. They started to make them system apps and when your not rooted you can't change anything in the system. When you root you have control of the system and can change just about anything you want. The only option now without root is disable apps but it still keeps them on the phone or tablet. Without root you don't have the permissions to do what you want.This is interesting - even with older android versions where various apps need root - I have never had to root for deleting apps.
I have simp.y used the apps uninstall command then run Ccleaner afterwards to remove the bits and pieces left behind.
Nigel
I root everything that I have just so I can change whatever I want on my tablet and to get rid of the great amount of bloat ware that it comes pre-installed with. I also get rid of all the useless Google apps that come installed that I don't use. Those you can't uninstall either, you can uninstall updates but still leaves the original apps there.
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