What the hell is a survival cell phone? Man , some people get way too carried away with the survival thing. You know, 100 years ago people survived just fine without cell phones. Anyway, If you are refering to something that you can take far into the field, I would suggest an iridium phone. Obviously not something you would use every day, but its as close to a "survival phone" as any I can come up with.
The question was which of the currently available cellphones would give the most benefits in a survival situation.
I agree the most important consideration is which of them would
work.