I'd like to do a short update and hope fully some of my observations and questions can be addressed.
Originally it all started with stock warp rebooting for no apparent reason on its own primarily when using Navigation app which I assume is tied to Google maps app.
People said root phone....so I took a shot and with input from members here (thanks to all for advice and help) I rooted phone then changed kernel to"Alein" using "No frills cup control" set max clock free to 1.613 ghz and changed Governor to smartassV2. Am still using stock ROM
Yesterday had to bring one of my sons home to CT. Set Nav app to his Ct location at 9:30am and by 10:15am phone did it again and rebooted on its own for no apparent reason. Since we were almost at location I did not restart app at that time. However upon starting return trip at 12:30 pm I started Nav app again and promptly at 12:48 pm phone rebooted on its own again