Falcon will reach out to you asking for the serial number. He will check the warranty (which most likely will be gone by now due to its age) and refer you to contact your local ASUS service center. Depending on where you are, you might be able to get...
Just got the dreaded ramdump screen on my Zenfone 8 less than 2 years of usage. Happened during video streaming. Tried hard reset (power + volume down) buttons and now it's completely dead. Expected better for a $550 phone.