WhatsApp verification sucks. I changed to a new number and a new device. For some reason, WhatsApp couldn't read my backup files although I can see the files are secured in my google Drive. All of my chat histories and media are gone. And I have to keep waiting for the verification code until 48 hours. And for some reason, Whatsapp couldn't also call me for the verification method. The solution from the customer service wasn't helpful either and couldn't fix my problem. I'm not happy at all!!!