First off I'm assuming you meant iPhone 4, not 4G (common mistake). And to answer your question, no. The iPhone 3G has a much larger sim card than the iPhone 4, but you can just take them to At&t and they will transfer everything to the new card for you. If you already have both phones, I doubt they will even charge you.
ummmmmm... im pretty sure its only for jailbroken phones... with the iphone 4 im not so sure if you can do different sim cards. Hope this helped... Probably not. oh well
No
-The iPhone is a 3G phone NOT A 4G. -Despite the '4', both Verizon and AT&T iPhones run on a 3G network. -The iPhone 4 is not a 4G phone, the networks have a 3G conectivity. -None of the iPhones can have 4G conection.
An iPhone 4g has better technology. It also includes SIRI, who answers all questions. Furthermore, the iPhone 4 has the capability to operate on the 4g network, whereas the iPhone 3g does not.
once 4G is as popular as 3G
There is only a SIM card slot in the 3G and 4G LTE iPads. The WiFi only models don't have a mobile radio, so a SIM slot would be useless.
Original Answer by Norfalka2545 Edited by Arianna Lovendino The answer is iPhone 4, because 3G is an advanced cellular network. If it were named "iPhone 4G", people may mistake the device for an iPhone 4G, when it is really an iPhone 3G. Hence, iPhone 4.
Yes, but the iPhone 3GS will probably only work on the slow EDGE network because it lack's the proper antennas to use T-Mobile's strange bands of 3G and 4G.
The iPhone 5 is a 4G LTE phone.
There no such phone as an iPhone 4G, only a 4, a 4S, a 3G and a 3-GS
4g is about 20 gigs-ish plus what a 3g offers. Though 4g itself is actually not in existance. It's still in the making and it's looking as if it could take about 10 more years to completely have true 4g coverage. They refer to it as 4g but it really isn't. And the iPhone4 isn't actually 4g coverage, it's just referred to AS an iPhone 4, cause it's the fourth edition iPhone.
iphone 4g or 5g to be used for more contact-:isoftinc
Yes, but not perfectly snug.