A seven year old cell phone…
…what could possibly be fun about that?
Well, there is a project called OsmocomBB which aims to build a fully functional GSM open source firmware and it can run on some well defined models from Motorola. I just bought one of those models on eBay and on a recent visit to NYC, I picked up the package and brought it home with me.
Time to build a cross compile environment and set up that darned USB->UART connection, this is going to be fun!