Hi guys, so I bought a used XL back in December 2018, the phone work perfectly never drop no issue no bugs, until July 2019 I was using it and it started moving slow then I powered it off and it went into bootloop. I conducted a factory reset and boot it in safe mode and it came on in safe mode then power off itself and from that time it just shows the Google name on start up for 10 second then powers off and repeat the cycle. Can anyone help me please.