iPhone data not switching to your travel eSIM
Your iPhone keeps using your home SIM for data instead of your travel eSIM.
Try this, in order
- 1Go to Settings → Cellular → Cellular Data and choose your travel eSIM line.
- 2Turn OFF “Allow Cellular Data Switching” (same screen) so it can’t fall back to your home line.
- 3Open Settings → Cellular, tap that line, and make sure “Turn On This Line” and Data Roaming are both on.
- 4If your home line keeps taking over, set it to Off for data while you’re abroad.
- 5Restart the iPhone after changing these settings.
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