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Apple iPhone - Turn International CDMA On / Off

2026-10-22 20:15:01.229

Apple iPhone - Turn International CDMA On / Off

Here's how to turn International CDMA for your iPhone on or off to improve your network connection while traveling.
  • Postpaid customers
    : To get specific info on using your service while traveling internationally, visit our International Trip Planner, enter your info then click 'Sign in' for a personalized solution or 'Get Started' if you don't want to sign in.
  • The steps only apply while traveling outside the US and may vary based on international network.
  • The steps below apply to the following Apple® iPhone® models:
    • iPhone X
    • iPhone 8 / 8 Plus
    • iPhone 7 / 7 Plus
    • iPhone SE
    • iPhone 6 / 6 Plus / 6s / 6s Plus
  1. From a Home screen, navigate:
    Settings Settings icon
    Cellular
    .
    If unavailable, swipe left to access the App Library.
  2. Tap
    Cellular Data Options
    .
  3. Tap
    Roaming
    .
  4. Tap the
    Voice Roaming switch
     to turn on Switch On or off Switch Off.
    Voice Roaming must be on for the Data Roaming and International CDMA options to be available.
    To enable Data Roaming, tap the
    Data Roaming switch
     to turn on.
  5. Tap the
    International CDMA switch
     to turn on or off.
    CDMA is a wireless technology that Verizon uses to place and receive calls within the US and some global destinations.
    Turning off International CDMA while in another country may improve poor messaging or data performance.