Do either of you own an iPhone 4?
Robbo has every mobile ever made... ever
(+ a lot of people who post in these mobile threads have owned/still own iPhones...)
Here's my take!
Internet browsing - Tie
Desire/Galaxy S: Bigger screens + proper flash.
iPhone: Hi res screen + safari is smooth and very polished.
Apps, odd bit of gaming - Tie
Desire/Galaxy S: I download more apps in the first week on android than in 3 years with the iPhone... widgets, widgets and more widgets = Sexy time

iPhone: Simple and easy with everything you could possibly need (exept widgets)
Call quality/reliability - Tie
Desire/Galaxy S: Reliable + good audio quality. Android could have much phone intergration, it only recognises US number types from web/apps + you can't copy/paste numbers into the dialer

iPhone: Just as good, get a case if you start dropping the signal? Easy to call numbers from the web/apps etc.
speed of operation - Tie
All have great hardware and operating systems.
Factor in prices and make your choice

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