If you completed the carrier activation steps for AT&T, Sprint, or Verizon when you purchased your new iPhone online, it will arrive ready to use. Just turn it on and follow the onscreen instructions to set it up. If you chose to skip carrier activation at the time of purchase, you’ll need to insert an active SIM card or contact a carrier to set up an account. Unlock Prepaid Iphone. If you selected an iPhone for T-Mobile, it will come with the appropriate nano-SIM, but you’ll need to contact T-Mobile or visit an Apple Store to activate your iPhone. If you selected the SIM-free iPhone, you’ll need to insert your own nano-SIM card or obtain one from the supported carrier of your choice and activate it in order to use your iPhone. IPhone offers the same innovative features regardless of the wireless carrier you choose. Garritan Personal Orchestra 5 Keygen there. If you choose AT&T or T-Mobile as your wireless carrier, your iPhone will use either 3G or 4G LTE cellular technology for data services and voice services.