As the thrill of the iPhone ’s unveiling wears off , analysts and users are require questions about how the machine will play off from the San Francisco stage where it made its unveiling on Tuesday .

Some features of the $ 499 telephone set stunned attendees at Apple CEO Steve Jobs ’s two - hour Macworld Expo tonic . Its music and video capability with the biggest and sharpest iPod video display yet , its touchscreen interface that lets you zoom along in and out with your fingers , and its about clitoris - gratuitous pattern all pull back large cheers . But much still is n’t known about the iPhone — even its name is now in doubt , thanks to a trademark suit by Cisco Systems — and some observer have bang known shortcomings .

The innovational touch screen , which would contain almost every occasion of the phone , might not work so well if it got scratched , concern Ovum analyst Roger Entner .

And the virtual keyboard on the touchscreen may or may not work well than the midget hardware keyboards on other smartphones , state JupiterResearch analyst Michael Gartenberg . Plus , it ’s not clear how easy it will be to use the iPhone with one bridge player , he enjoin . The large area of glass also raise vexation about breakage if the slick - looking earphone slips out of your hands .

Another ironware business concern echoes complaints about the iPod : Apple did n’t say whether user will be able to supersede a get into - out barrage fire themselves . Typically in GSM ( Global System for Mobile Communications ) phones , the SIM ( indorser identity element module ) lineup is hive away behind a removable assault and battery , Entner said . But if Apple wants the speech sound to be a plastered unit like the iPod , it could have the SIM notice instal in a one-armed bandit on the side — where it ’s more prostrate to dirt and legal injury . shelling animation in the slight equipment , which includes notoriously power - sucking Wi - Fi technology , is also a concern .

Users may also be disappoint with the amount of software available for the iPhone . Apple said it is modernize applications with exclusive U.S. carrier Cingular Wireless , but the picking are potential to be slim for a while , said InStat psychoanalyst David Chamberlain .

The Mac OS X on the iPhone will be a closed variant of the operating system found on Macs , and third political party wo n’t be able to develop software program for it independently from Apple , Gartenberg said . It does n’t allow user open up up Microsoft Office attachments in e - mail today , a big shortcoming , Gartenberg said .

Many observer slammed the lack of 3 universal gravitational constant ( third - generation ) nomadic data capableness . The slower 2.5 G technology the iPhone has may hopple entertainment applications , said American Technology Research psychoanalyst Albert Lin . It was plausibly leave behind out because of cost , he said . Lin wait Apple to put up over - the - air iTunes purchasing in sentence , but that would probably wait until after a plan 3 one thousand iPhone comes out .