Stop with the less secure access nonsense
Yahoo.
Every time I log into my mail I get pestered to add my phone number.
This isn't going to happen. I only vaguely trust you with this email address so I'm not going to let you have my mobile number.
Please give us an option to say we understand the risks, never ask again.
I know people often say they are going to close their account, and I know you don't care but this is soo annoying that I will have to ditch yahoo for good.

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Doc Adviser commented
Seems have secretly registered IP address to match all sign in criteria.
If data don't match, program prompts to send verification. So much for "security".
Programmers, dont realise that one may also access one's email :1 ) Another device ( hence different IP address )
2 ) Cyber cafe ( in case of emergency, if cell phone / mobile phone battery dead )
3 ) Overseas ( where cell phone / mobile phone connectivity not working - roaming )Young, highly qualified morons with fancy sounding degrees from prestigious institutions employed. Yet, no common sense at all. Theory knowledge, no practicality. Our future generation.