How are you able to look at how much data was transferred on Safari mobile? As far as I know you can't access dev tools on mobile. Did you just change the User Agent on your computer to simulate?
You can! You can use the desktop Safari to connect to your iPhone's Safari and access full developer tools.
Just connect your iPhone to a Mac, open Safari desktop and in the Develop menu, you will see your mobile phone. When you open a page on mobile Safari, you will be able to see it from the Develop menu and when you click on it, the full Safari developer tools will open in a new window. Works just like the regular developer tools.
Just connect your iPhone to a Mac, open Safari desktop and in the Develop menu, you will see your mobile phone. When you open a page on mobile Safari, you will be able to see it from the Develop menu and when you click on it, the full Safari developer tools will open in a new window. Works just like the regular developer tools.