just take the sim out and it works
No, the sim card is located in the top of the phone only.
yes
Yes, you will have access to all the features. It doesn't matter what SIM card is in your phone because the phone needs a SIM card, given to you by a carrier, that is supported by the phone to operate. Just put the SIM card in the HTC Wildfire and put it in the iPhone.
No.
Then just get an iPod touch ..
Im not sure but i think you have to jailbreak it
No, the Pantech Impact and the iPhone 4 do not use the same size SIM cards. The Pantech Impact uses a Mini-SIM card (also known as a standard SIM), while the iPhone 4 uses a Micro-SIM card, which is smaller in size. Therefore, they are not interchangeable without an adapter.
No
Of course, the iPhone 3G and/or the original iPhone will take any normal sim card; the 3G iPhone will take the 3G sim as well.
In some situations, the status bar on your iPhone might display No SIM, even though your iPhone has a SIM card.
An Apple iPhone 3GS can be purcased unlocked without a SIM card and used with a local carrier's SIM card. Once purchased it is as simple as inserting a SIM card from the carrier of your choice.
Inserting a SIM card into an iPhone 5 without the tray is not advisable, as the tray is specifically designed to hold the SIM card securely and ensure proper connectivity. Attempting to insert the SIM card directly into the phone without the tray could damage the device or the SIM card itself. If the tray is lost, it's best to obtain a replacement from Apple or an authorized service provider.