Does restoring the iPhone 4 deactivate your phone plan?

I'm having some problems with my iPhone 4 and would like to know if I would have to call Page Plus to reactivate it or if restoring will (hopefully) only erase my phone content.

No your phone plan is linked to your carrier SIM card.

No all carrier data is stored onto your SIM card. Phone number plan data usage etc.

No it will only delete the things you installed/downloaded on.