I just received this modem, what do I need to do?

- You must call a carrier and register the ESN number with them. Sprint models (N2) must call Sprint and Verizon models (N3) must call Verizon. For other models, N1 and N4, etc, you must contact your provider. - You must then activate the modem: We have Sprint and Verizon models that are preconfigured and just need to run through the activation steps. - The N1 models need more configuration using AT commands in the Reference Guide. The N4 model uses a RUIM card, similar to a SIM card.