We finished converting one of our stores over to Shopify, and one of the first things we noticed, was that some customers were not entering their phone numbers. Behold, the default value for this was optional.
Shopify actually claimed, that asking for phone numbers actually lowers conversion rates. WTF?
Yes, if you are just doing lead generation forms, this is true, but for a shopping cart, are they crazy.
So your customer is going to trust you with their credit card number, but they don't want to enter a phone number; so illogical.
I can't remember anytime, that I ordered anything that didn't require a phone number. With the number of mistyped email addresses, a phone number is critical.
Has anybody ever seen a study to this effect, or had experience with this. I highly suspect this is just another urban legend.