Can I use a purchased iphone from apple store and then use my regular plan with no data on it?

Can I use a purchased iphone from apple store and then use my regular plan with no data on it?

You need to buy an "UNLOCKED" phone for this. That is what the terminology means. It is not locked to a specific provider. If it is you Can't use anyone elses plan with the phone.

Yes you can, but you will need to buy UNLOCKED/SIM FREE version.