This is good news. It is easy to replace the iPhone's SIM card. You must decide what purpose you want the SIM card to do so. Some offer advanced features for the iPhone. Many of them work only with AT & T and can not be unlocked. Others actually unlock iPhone and can be used in any network, not GSM-based networks such as AT & T and T-Mobile.
This is a big problem with unlocked phones, you can not run on any mobile phone seti.Postavschik needs information from mobile phone to set up services. Therefore, an unlocked iPhone to use on another network, the AT & T, the SIM card from another phone will need, and replace the SIM card into the iPhone with a SIM card. It's not as easy as it seems at first glance. Must include the first mobile phone to a network, and then switch to SIM unlock the iPhone.
So far so good, huh? But how can I change SIM card? It's easy. Jump near the headphone jack. There is a small hole. Take a paper clip, open, and then click otverstie. Vladelets SIM card, which is under the house a button, and you can remove the SIM card. Another problem with the new SIM card is unlocked iPhone, it may not have the same size. Therefore, you may need a plastic tray adjustment assistance iPhone SIM card tray better.
You can also get SIM cards for your iPhone that do not need to be unlocked. Some of these offer better performance and additional features. These do not have the same issues as the unlocked, but size still can be a problem. Many will come with a plastic try that works as an adapter. For these SIM cards, all you need to do is to swap out the SIM card, your phone should remain activated. If you have trouble, contact the vendor of the SIM first, then contact Apple.
Where do you buy SIM cards for your iPhone? The place with the biggest selection is eBay. As per usual, when shopping on eBay make sure you are dealing with a reputable seller. Check the seller's ratings and feedback. Also check their PayPal ratings. Never pay by check, cash, money order, or wire transfer. Always use PayPal or your credit card. On eBay there are literally hundreds of different SIM cards to chose from. Many have very vague descriptions. In addition, many of the newer SIM for 1.1.1 and higher will require a rather extensive unlock procedure.
If you see terms like iphoneSIMfree, Jailbreak, or AppTapp then you know you are dealing with a SIM that will require an unlocked iPhone in order to use it.
Overall, changing and locating SIM cards for your iPhone is not a difficult task. The problem lies with the SIM cards that can only be used in an unlocked iPhone. If you are planning on unlocking the 1.1.1 and higher firmware be prepared for a long drawn out process or be prepared to pay iphoneSIMfree for their version of an unlock.
Then you have the issue of finding a way to use the unlocked iPhone on another network. The iPhone supposedly only works on a GSM network, which translates to AT&T or T-Mobile in the US. Exactly how these other SIM get the iPhone to work on a non-GSM network is something I have been unable to figure out. All in all be careful when purchasing SIM cards for your iPhone. Know what you are buying.