"iPhone 4 is useless if used for business"2.0 starson by badulinko
Pros: Excellent interface, lots of cool apps (free), nice, simple design, large display
Cons: If used as voice/data device in business environment, running Microsoft Exchange, battery life is unacceptable, holding charge for 3-4 hrs.
Summary: I purposely snitch from Blackberry Torch to iPhone 4 to evaluate if we can use it as business phone. What a disappointment, what a mistake. Having device what will give you over 30 hrs of battery life while in constant use, iPhone 4, after being fully charged for over 10 hrs, running only 2 apps (phone and mail) manage to hold charge for 4 hrs. Called Apple tech. support twice and after checking all settings and make sure that no apps are running multitasking, finally get phone replaced - had well known manufacturing battery defect.
With new phone, fully charged, battery life was as expected from such device but, the moment I enabled my Exchange mail to sync, battery just drained in front of my eyes (had filling that I'm looking into stop-watch, not power meter). Bottom line: if you want cool looking gadget, get a iPhone 4, but if you want to use it as your business device, look somewhere else as this is not what you will be happy with.