If you’ve bought an iPad with 4G/cellular capabilities (we discuss whether that’s a good idea in our 2015 iPad buying guide) or a new iPhone, you need to buy and install a SIM card. Here, we explain ...
I have an iPad 3. I put in a SIM card from a local cell carrier just to see if it will work. I never activated a plan and my cell data is off. Now even though cell data and the whole iPad have both ...