After showing an article of a DIY cellphone in the German MAKE journal to my eldest girl, we had to build two of them. Soldering was no problem with my new RT soldering station. The purchased LCD Displays where of very poor quality (the PCBs were too thin and bended, and so the display had bad contact). We decided to tweak the phone an use an 128*128 OLED Display. The housing is printed with PLA. The arduino file had to be adapted.
All needed information can be found on http://diy-devices.com/devices/cellphone.
The code is not complete. The project is in the limbo for the moment. If you need more Info, send a mail :)