"I had the people at the store swap SIM cards with another iPhone they had there, and I they could send SMSes from their phone with my SIM card, however on my phone with their card, they couldn't ...

It can also be used to send individual messages but you would need to delete the automation after the first message has been sent, or the app will continue to run, sending a message every time. 1.

Congratulations, you've just gotten an iPhone 4S. Let Macworld help you set it up, transfer data from your old phone, and get you playing with all its new features.

Inside, the iPhone 4S is all new: the antennas, the processor, the camera system, Siri, the battery. Everything has changed except for the external case and the 3.5-in. screen.