You call your carrier and activate your sim card.
all you need to do is switch your sim card you could get a sim card from a new provider
Take the phone back, you cannot get it to work if the sim is not registered.
you have to put YOUR sim card in. from your old phone.
For most, if not all, phones - No SIM card No Call
No, only a micro-sd card slot. Although they might make another one with 4G LTE technology which requires a sim card
You can edit the contact list of your sim card right on your phone. Just make sure that the phonebook is set to sim card memory, and edit away.
Inactive USIM Means That Your Sim Needs Activating Log On To The 3g Site And Activate It!
TURN THE B00ST SiM CARD UPSiDE D0WN AND iNSTERT iT iN THERE (REALLY W0RKS) TURN THE B00ST SiM CARD UPSiDE D0WN AND iNSTERT iT iN THERE (REALLY W0RKS)
The plural form of SIM card is SIM cards.
sim card
sim card
You can use the same SIM card for your iPhone 6 that you used in your iPhone 5.