Why do websites tend to ask for phone numbers, even with no reason to call? [closed]

1. Why do websites ask for your phone number?
2. Should I give a website my phone number?
3. What is a phone number field?

Why do websites ask for your phone number?

Web services keep asking you about your phone number because it is another security layer that to make you think that your account is more secured(due to the fact that it requires you another extra-step to access your account) but as many already said, it's useless in front of a real hacker because hacking phones and ...

Should I give a website my phone number?

Overall, it's a great idea for businesses to put their contact number on their website and it can even increase conversions and revenue. It also makes your brand more visible, open and contactable – which in turn will generate greater customer loyalty and satisfaction.

What is a phone number field?

The Phone Number field is similar to a number field, but with a pre-defined list of common phone number patterns. As with the Number field, letters and most symbols are not allowed.