Hello Mobile suspends your service if it detects use in another device (indefinitely). Verizon and their resellers may also register devices by ESN/IMEI, depen

Hello Mobile suspends your service if it detects use in another device (indefinitely). Verizon and their resellers may also register devices by ESN/IMEI, depending on if you were migrating to/from a LTE only device. Verizon also whitelists IMEIs and moving from an 'approved VZ device' to a 'global/international device' may result in no service or suspension/contact support Pageplus is IMEI-tied and does not allow moving your SIM. Metro (T-Mobile MVNO) blocks service for changing SIMs, at least in the past year or two. They charge a $15 fee to update your IMEI so you can move your SIM to another phone. Cricket whitelists devices and does not allow arbitrary swaps.