Yea, I've seen that. They also make a "sleeve" version
which is a perfect match for my nokia phone. I just wonder
how well they actually work...Actually, I would prefer to make
one myself, but I'm not sure how I would want to go about it..
IE: would I need a resonant 800 mhz "coupling antenna", etc..
I tried just making a experimental patch out of foil, and sticking
it on the back, behind the internal antenna, but it didn't seem to
work.. Anyone have any good ideas how to homebrew one?
Actually, I've also been considering just drilling a hole in the phone,

and installing a antenna port....
MK