Anybody do any A/B testing on fixed headers on mobile ecommerce sites? I personally hate them but would like to know the pros and cons and if it affects conversions.
I bought a big phone so I could see it better. If somebody has a fixed header that essentially takes away part of my screen I'm not happy.
If they are good what is the best height? At what height does it cease to be a benefit?
I have a client that the fixed header takes up 1/3 of the screen. I would imagine that everybody would agree that is a bad idea for mobile. I would like to tell them to get rid of it but if it is best to have a fixed header what height should I tell them to use?