Cool [Q] Can an android phone run without screen?

Hello,

This would be my first post here ! so please bear with me

I want to know or confirm from the advance users for the following facts:

1. Can an android mobile be used even after removing the led socket from the mother board.

2. Can android mobile start directly when the power source is connected.


My project:

I want to build a GPS device from the mobile hardware . Specially the phone with AGPS support !

Can you please tell what older models are cheap and available or there hardware is available. I have made an app that runs in background on start of the mobile and sends coordinates to the server.

Hardware
- Motherboard
- Gps antenna
- SIM CARD