Originally Posted by d1mbu1b
The open questions are:
1) are the D+/- actually 3.3v levels
USB signals are typically 3.6v, but the phone hardware may have a circuit to switch from USB to TTL serial. Regardless, the 3.3v zeners will give the MAX232 a nice flat topped square wave signal to work with.
Typically, to get a console on a serial port, you just specify a kernel boot option, or edit an entry in /etc/initab file. I'm not familiar the specifics of the android kernel though.
T879 Note on T-Mobile
Do not quote my entire first post in a reply!