[Question] How do I know if phone is bricked?

[edcoolio]

There are some updates:
Taking away the batterie for longer time (at least for about 60 min) has the affect, that the phone starts normally. I can install apps, watch videos, everything is fine.....untill the phone suddenly freezes again. Then I have to put batterie out again and wait. If I put batterie in again very soon, phone either goes into bootloop or does not start at all. So I have to wait some time, before reentering the batterie. For me this looks like as any diodes are discharged when phone has no batterie for longer time! Really strange behaviour!?

Soooo.... to repeat the most important question as asked above by WuddaWaste :

"How did it get into this state?"

Did you flash it with a different ROM than stock? Can you revert it back to stock? If so, does it solve the problem once on the correct stock ROM? Do you have a backup? Was it like this from the factory?

It is important to be specific for anyone to give you help. The first step is the most important - that is to figure out if the issue is hardware or software.