DIY Arduino Cellphone
Yes, it's true. A complete mobile phone with Arduino heart.
David has created a basic phone, which can make and receive calls and text messages, store numbers, names and display time.
He has used an Arduino GSM shield and a few more components, and has two variants: one with an array of LEDs and one with an LCD.
On their website are available schemes and programs needed for yourself can make this super-style brick Nokia!!
Link [David A. Mellis]