Ever since I got back my Zenfone8 from the service (they replaced the display) there is a "clicking" noise audible randomly. I could not figure out what is causing it, sometimes it does it in every 1minute, sometimes it takes longer time, but its repeating. During calls, I can hear it very often, but also during browsing when I hold the phone in my hand (away from my ears) its also loud enough to be heard. Before my phone was in the service, I have not encountered into this, just after the return of the repaired phone with the latest (220.127.116.11) fw preinstalled. I am unsure where it comes from exactly, but its frustrating. Has anyone else experienced similar???