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The cost will depend on who your mobile phone provider is so ask them. It should not be overly expensive as its not the latest model of the iPhone.
You need to discuss this with your mobile provider as only they can deal with upgrade prices when you are under contract with them.
I lost my Iphone a while ago and i went to the service provider and they tracked my sim card. Hope it helped!
A celluar provider that offer the Apple Iphone 4S with is Att&T. You can purchase the Iphone full price and have it unlocked allowing it to be used through a service provider. These unlocked devices do not work on CDMA carriers such as verizon or sprint. You will then have to contact the service provider to have the phone connected to the network and set up the features you would like on the phone.
Although Apple would like you to think otherwise, if you unlock the iPhone you can use it on any GSM-based carrier (in the US, that means AT&T or T-Mobile).
No, T-mobile does not have the iPhone. AT&T has it though.
There will not be an iPhone 4S for T-Mobile but you can get any iphone unlocked at unlockatt.com
The new iPhones come with a SIM lock which means it is not possible to change the service provider of the phones. There are grey markets vendors who might help you break the SIM lock and use the iPhone for other service providers. But remember, your iPhone warranty will become invalid if you do that. With the mobile phone portability service available you can change your cell phone service providers and still retain your old phone number.
T-Mobile does not have the Iphone only At&t does
want to know service provider 8552869999
The key buzzword is "Number Portability." In the USA and Canada, you can "port" your phone number to a different provider in most cases, even including porting a mobile phone (cell phone) number to a landline, or vice-versa. In many other countries, you can port your mobile phone number to a different mobile provider, but not to a landline. Contact the new company you want to do business with and ask about the availability of number portability.
call his/her mobile(iphone) or sms