I have a Verizon Motorola Mini and it is not under contract any longer. I wanted to get it unlocked so I can switch to a pre-paid plan with another carrier. Verizon told me that all their 4G LTE phones are already unlocked. Assuming this is true can I put either a CDMA or GSM sim in it or do I have to put a CDMA sim in it. Verizon told me I could put either one in it.