ASUS - ZenTalk

Hello, is it possible to register an old Zenfone 3 Z017D bought from a 2nd hand shop since when I try I receive here a message that 'the serial number is already registered'? I am curious how old it may be and when expired its warranty. Besides I wan...

Hello. Again I have a problem to register an Asus phone bought from a second hand shop with all the papers OK! Now is about a Rog Phone 5s when I try to register its serial number, it says that the phone is registered but I cannot see it in my device...