I thought only Verizon phones had Band 13 on them, since in the US on the mainland & Hawaii, it's a Verizon exclusive band. Unless the phone is from Canada, where Band 13 might be used, then I doubt the unlocked phone has Band 13 on it. Also, if the phone is from Europe, more than likely, it wouldn't include Band 4 either (European & Asian phones are slow to add newer North American bands to their phones). Otherwise, if the phone has Bands 4 & 13, it can be used on Verizon (Verizon actually can not deny any device that has Band 13 on it, due to the terms of their licenses that they hold on the mainland & Hawaii). You just won't be able to make phone calls on that phone.