如何在iPhone上同時管理兩張eSIM？切換流量標籤教學

How to Manage Two eSIMs Simultaneously on iPhone: A Tutorial on Switching Data Labels

As eSIM technology becomes more prevalent, more and more users are choosing to use the iPhone's Dual SIM feature to manage two phone numbers or data plans simultaneously. Whether for travel data plans, international data cards, or separating work and personal use, mastering eSIM settings can greatly improve efficiency.

This article will teach you how to manage two eSIMs on your iPhone simultaneously, and detail methods for "data switching" and "label settings."

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What is iPhone Dual eSIM?

Apple officially states that iPhone XS, XR, or later models support eSIM, and iPhone 13 or newer models can even use "Dual eSIM" functionality simultaneously. However, it's important to note that eSIM support varies between different regional versions of the iPhone.

For example, most models in mainland China use a "Dual Physical SIM" design and do not support eSIM functionality; early versions in Hong Kong and Macau (such as iPhone XS, XR) also did not fully support eSIM. Some newer models released later (such as the Hong Kong version of iPhone 13 and later) have started to support eSIM, but actual functionality may still be limited by region and carrier.

Therefore, before purchasing a travel eSIM or international data card, it is recommended to confirm whether your iPhone model and regional version support eSIM to ensure that mobile data services can be used normally.

With dual SIM functionality, you can:

  • Use two phone numbers simultaneously (e.g., work + personal)
  • Add a local eSIM for internet access when traveling abroad
  • Separate voice and data usage

However, please note: Your iPhone will only use one cellular data network at a time, which is especially important when switching data.

How to Set Up eSIM Labels

Once you have successfully installed two eSIMs, it is recommended to set up "labels" for easy identification later.

Setup Steps:

  1. Go to "Settings"
  2. Tap "Cellular" or "Mobile Data"
  3. Select one of the numbers
  4. Tap "Cellular Plan Label"
  5. Customize the name (e.g., Travel Card / Primary / Work)

Apple officially states that labels can be used to select which number to use for calls, messages, and data, and can also help users quickly distinguish different eSIM purposes.

How to Switch iPhone Data eSIM?

When you are using two eSIMs simultaneously (e.g., a local card + a travel data card), you can switch data sources at any time.

Data Switching Tutorial:

  1. Go to "Settings"
  2. Tap "Cellular"
  3. Select the "Cellular Data" option
  4. Choose the eSIM you want to use (e.g., Travel / Data)

After switching, that eSIM will become the primary internet source.

In addition, you can also enable "Allow Cellular Data Switching." This feature can automatically switch data sources when the signal is poor or during a call (depending on carrier support).

Precautions for Dual eSIM Use

When actually using dual eSIMs, please note the following:

  • iPhone uses "Dual SIM Dual Standby (DSDS)" technology
  • Only one card can use data at a time
  • When using different carriers, the iPhone must be an "unlocked" device
  • During a call, data on the other card may be paused (unless data switching is enabled)

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