: Open your provider's app (like My Verizon , myAT&T, or T-Mobile ) to purchase one-time "data boosts".
Buying data for your iPhone depends on whether you are at home or traveling. Most users top up through their carrier app or install a digital eSIM for instant connectivity. How to Buy More Data
: For international trips, download apps like Airalo or Nomad to buy local data plans without swapping physical SIM cards.
: Disable this to stop apps from downloading content while you aren't using them.