Mine started to boot loop a couple years back and it was out of warranty by then. I sent LG a mobile device repair request and the rep sent a prepaid label. So

Mine started to boot loop a couple years back and it was out of warranty by then. I sent LG a mobile device repair request and the rep sent a prepaid label. So I wiped it, removed the sim and mailed it to their US repair center. I got it back about ~2 weeks later in working condition, at no cost. LG is repairing any Nexus 5X for the bootloop issue outside warranty. Apparently it's due to incomplete contact of the heatsink with the CPU. https://www.theandroidsoul.com/lg-offering-free-repair-for-nexus-5x-units-with-bootloop-issue/ https://www.theandroidsoul.com/lg-offering-free-repair-for-n... https://lgmobilerepair.com/request_repair https://lgmobilerepair.com/request_repair