I need to know more about disabling built-in apps. Some apps can be disabled, but there are some which has "disable" button disabled. Is there any way how to find out which apps cannot be disabled? (I know that disabling some of them (e.g. settings) doesn't make sense, but some apps look OK for disabling and it is not possible for them too). Is there some other problem with disabling them? (I heard that some of them enable themselves with restart of phone).
Thanks a lot for answering.