Hi, my mom had a Galaxy S3 mini on verizon for about a year and a half then it started rebooting and freezing at the verizon screen at complete random. At first it was every once in a while but it progressively got worse over time. She has sense changed to a Galaxy S4 on verizon and i am attempting to troubleshoot what is wrong with the S3 mini. I have already tried a factory reset on the device and even that gave me trouble as when i pressed factory reset it sat on rebooting for quite a while. eventually it did reset but it did not Fix the issue.