If you have used an eSim on your Apple iPhone as your main sim card, you can use the CiFi sim card as a secondary card to keep both sims active at the same time.

To set your CiFi Sim card as your default for data services, please follow the following instructions

  1. Go To Settings
  2. Tap either Cellular or Mobile Data
  3. Tap Cellular Data
  4. Tap the CiFi sim card to select it as the default Sim card for data.