iPhone and iPad default cookies settings are set to Allow from Websites I Visit, which prevents third-party cookies from being saved on your system. To enable third-party cookies:

Step 1: On your iPhone or iPad, go to Settings

Step 2: Select Safari.

Step 3: Under Privacy & Security, toggle off Block All Cookies and Prevent Cross-Site Tracking.

Step 4:
You may need to restart Safari for the new settings to take effect.

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