How to unlock iphone to accept a new sim card, after erasing all pre-existing data?

I recently purchased a phone, believe may have been stolen, and erased all data,media etc. as a function of the phone. Then attempted to install a valid sim card using the same att service. The iphone appears to be locked, and only allows access to emergency calls. What needs to be done to fix it?How to unlock iphone to accept a new sim card, after erasing all pre-existing data?
You can visit http://www.easyiphoneunlocking.com/index鈥?/a> . It has the jail breaking software version required to unlock the Iphone. Once you unlock it you can use any sim card with it.

When choosing a jailbreaking version you must remember certain points. The version must be in tune with Iphone updates. The version must have after sale support. The version I recommended gives all the support. I have used it with many of my customers and have received positive comments from all.

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