Hello, my sister has received this Limited Edition Iphone 5s as a present about a year ago. She gave me the phone after it has stopped working to repair it. In a Repair Shop I was told that this is a problem with motherboard and they do not repair it. Is it possible to fix it by replacing the motherboard ? Maybe someone knows the seller's name of this phone modification? I was told that this phone do not have IMEI so I do not know anything about the phone.