How to Block Cookies on an iPhone

Open your iPhone's settings. This is the grey gear icon on one of your Home screens (or in a folder named "Utilities").

Scroll to the fifth group of apps and tap Safari.

Scroll to the third group of options and tap Block Cookies.

Review your cookie-blocking options. These include the following choices: Always Block Allow from Current Website Only Allow from Websites I Visit Always Allow

Select your preferred block option. Blocking cookies will prevent websites from collecting data--such as your location, frequently-used passwords, and other contact information--from your browsing sessions. Disabling cookies also means you'll need to log into your accounts each time you restart your phone's browser since the sites won't remember your login information.