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2025-05-14 18:30:23.682

Apple iPhone 12 Pro / iPhone 12 Pro Max - Manage Voice & Data Settings

Here's how to manage voice and data settings to help with battery optimization for your iPhone 12 Pro / iPhone 12 Pro Max.
  1. Open the
    Settings app
     on your Apple® iPhone®.
  2. Tap
    Cellular
    .
  3. Tap the
    Cellular Data switch
     to turn on.
    If using an eSIM, Cellular Data is enabled by default on the preferred line (e.g., Primary Secondary, etc.).
  4. Tap
    Cellular Data Options
    .
    If using an eSIM, from CELLULAR PLANS, select the default eSIM line then tap
    Voice & Data
    .
  5. Tap
    Voice & Data
     then select from the following options:
    5G data connections are now supported in Dual SIM Dual Standby (DSDS) mode with iOS 14.5 or later.
    When the device is locked or in an idle state then unlocked, LTE may briefly display.
    • 5G On
      : Uses 5G whenever it is available, even when it may reduce battery life.
    • 5G Auto
      : Enables Smart Data mode. When 5G speeds don't provide a noticeably better experience, your iPhone automatically switches to LTE, saving battery life.
    • LTE
      : Uses only the LTE network, even when 5G is available.