Verizon iPhone 5 showing SIM NOT VALID
 

I have a Verizon iPhone 5 that works fine with a Cricket sim. However, when I try to insert a Simple Mobile sim (Tmobile) or an Airvoice sim (AT&T) I'm getting the message: Sim not valid ... the sim card that you currently have installed in this iphone is from a carrier that is not supported...

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Courtesy of WestNet Wireless
www.westnet.ca