HT202340: iPhone: Understanding SIM cards
Learn about iPhone: Understanding SIM cards
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Helpful answers
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May 27, 2012 5:41 AM in response to sheree1976by Allan Sampson,You need to install iTunes on the PC in order to connect your iPhone to iTunes on the PC.
The personal hotspot feature is tethering. Tethering is sharing your iPhone's internet connection via your carrier's cellular network with a computer. This has nothing to do with iTunes.