I changed my cell phone. How can I log in?

Change your mobile phone and download a nail. If you remember your account password, you can use it to log in directly.

It doesn't matter if you forget your account password, because you used your mobile phone number when you registered your account, and you can log in directly with your mobile phone verification code.

You can write down your pin account password in your notebook. That's what I did, so as not to forget, it's troublesome to log in later.