Android System App 101

Question

Can somebody explain to me what are the benefits of Android System App over a \"normal\" app (besides that fact that a system app cannot be uninstalled)? Special permission

Answer 1

There are permissions that can only be obtained by systems apps. For example the permission brick can be requested by every app but it is only granted to apps that are signed as system apps. There are some other features that make more sense I think directly installing and removing apps would be a system only permission too.