Does anyone know if there is 3rd party GPS software suitable for Sony mobiles? I'm thinking of getting a Sony C903 or C905 mobile phone but didn't want to keep paying for the seldom used GPS software updates!

I've Googled but haven't found anything. Seems to be closed-loop software.

Failing that does anyone know where I can find a list of phones with a decent (fast cold locking) GPS chip.

Thanks