Upgrade Activation Upgrade activations are for when your device is shipped inactive and you wish to activate it upon arrival. Cell Number To Activate These fields are mandatory. Name of User Cell Number of User ESN / IMEI Re-enter ESN / IMEI Your ESN (Electronic Serial Number) is an 11 to 15 digit number and can be found on the back of your handset underneath your battery next to the caption "S/N" or "DEC". Some devices will have an IMEI (International Mobile Equipment Identity). Consult your device documentation to determine this number. Sim Number Use the SIM card from my previous device in my new device Activate my new SIM card that I received My new device does not require a SIM card Comments (Optional) Contact Information Please supply us with information to contact you with any updates or questions regarding your merchandise while under service. Contact Name Contact Number Ext Contact Email Confirm E-Mail Company []