Umm, They do work yes but there rubbish, you cant make one with foil, It interfears with your Signal and the satalite, which makes it easy to connect to other phones, just quicker, gives it a little boost
Firstly, I would just like to say I am not having a go, not trying to argue..
My Mum has that phone, and it has 30MB memory, dont know if shes got like a Limited Edition or something..
Secondly, the memory is not amazing on those because of the size, how are they expected to fit loads of things into that, I mean its the size of a credit card when its folded up! I like it because of the size, perfect for people who want a nice, stylish, simple phone...