In the digital age, eSIMs have become the optimal choice for those who value flexibility when traveling abroad. But how many eSIMs does a phone support? And is it possible to use two eSIMs simultaneously? In this article, Aviro will help you answer all those questions, in a comprehensive and easy-to-understand way!

What is an eSIM and how many numbers can it integrate?

An eSIM (embedded SIM) is an electronic SIM integrated into the phone's hardware, requiring no physical removal or insertion. Users can add or change data plans with just a few taps on the screen.

Most newer phone models allow you to store 5 to 10 eSIMs, depending on the device. However, you should note that you can only activate one or two eSIMs at a time . Storing multiple eSIMs does not mean you can use all of them simultaneously.

Number of eSIMs on iOS and Android phones

1. How many eSIMs does an iPhone support?

iPhone 12, XR, XS: Support one physical SIM and one eSIM operating simultaneously. Depending on the iPhone model, storage capacity can reach up to five eSIMs.

iPhone 13 and later: Supports up to 8 eSIMs and simultaneous activation of 2 eSIMs.

This feature is extremely convenient for users who need to separate their personal and work numbers, or activate a travel eSIM when traveling abroad without removing their main SIM.

2. How many eSIMs does Android support?

Google Pixel 3 and later: Supports 1 eSIM and 1 physical SIM.

Samsung Galaxy S20, S21, S22, Z Fold, Z Flip: Depending on the model, they can store 5–7 eSIMs.

Some newer Huawei, Oppo, and Xiaomi devices also support eSIM, but with limitations in dual eSIM functionality.

In general, most Android phones can only activate one eSIM at a time , even though they can store multiple eSIMs.

How to manage and switch between eSIMs

Source: Canva

1. How to manage eSIMs

Since phones can store multiple eSIMs, managing them efficiently is essential. To help you avoid confusion and use the right eSIM when needed, here are some tips:

• Give each eSIM a name : When setting it up, you should assign a clear name such as "Work," "Studying Abroad," "Japan Travel," "Aviro Singapore," etc., for easy identification when switching or activating.

• Use according to specific purposes : Prioritize each eSIM for a specific role. For example: eSIM 1 for voice calls and SMS (work), eSIM 2 for mobile data (Internet), eSIM 3 exclusively for travel.

• Turn off unused eSIMs : Disabling unnecessary eSIMs saves battery and reduces confusion. You can turn them back on at any time in just a few seconds.

• Choose the right eSIM when traveling : Instead of using international roaming, you should activate a travel eSIM from your local carrier (such as an eSIM from Aviro). However, make sure your device supports Dual eSIM if you want to use both an international and a domestic eSIM simultaneously.

2. Requirements for using two eSIMs simultaneously

Starting with the iPhone 13, Apple has supported the feature of using two eSIMs simultaneously without needing a physical SIM. To do this, you need to meet the following conditions:

• Your iPhone must be iPhone 13 or later.

• Unlocked devices allow the use of eSIMs from various carriers.

• iOS software should be updated to the latest version to ensure compatibility.

3. How to set up and use two eSIMs simultaneously

Source: Canva

Step 1: Set up your first eSIM

• Go to Settings > Cellular

• Select Add Cellular Plan

• Scan the QR code or enter the eSIM information provided by Aviro.

• After installation, give your eSIM a name (e.g., "Work", "Travel") for easy management.

Step 2: Install the second eSIM

• Repeat the steps above to add a second eSIM.

• Give this eSIM a unique name (e.g., "Personal", "Aviro Singapore")

Step 3: Activate and manage two eSIMs

• Go to Settings > Cellular

• Make sure both eSIMs are enabled.

• Choose the default eSIM for:

• Calls and messages : Select your primary eSIM to make and receive calls and messages.

• Cellular Data : Select the eSIM to use for cellular data. You can also enable the Allow Cellular Data Switching option so your iPhone automatically switches between the two eSIMs based on coverage and availability.

Step 4: Manage calls and messages between the two eSIMs.

In the Phone app , the carrier name will be displayed, letting you know which eSIM is currently in use. When making a call, you can select which eSIM will be used for that call.

Advantages and disadvantages of using multiple eSIMs

Using multiple eSIMs on a phone offers clear advantages such as:

• Flexibility when traveling : Easily switch between international and domestic eSIMs.

• Separate work and personal life : Use one eSIM for work and one for personal communication without needing two phones.

• Switching plans quickly : With just a few steps, you can switch to a different network or data plan without removing your SIM card.

• Reduced risk : No worries about losing the physical SIM card, no need to frequently remove and insert the SIM card slot.

• Store your eSIM across multiple destinations : This is very useful if you frequently travel to the same countries (e.g., Singapore, South Korea, Japan...).

However, it also has opposite aspects, such as:

• Simultaneous activation limit : Although you can store multiple eSIMs, you can only use one or two at a time.

• Difficulty switching between devices : Some carriers limit the transfer of eSIMs from one device to another.

• An initial internet connection is required for setup : eSIM requires a network connection (Wi-Fi or data) to scan the code and activate.

Using multiple eSIMs on your phone is becoming increasingly popular and convenient, especially for those who travel frequently or need multiple phone numbers. Don't hesitate to take advantage of this smart eSIM storage feature to stay connected both domestically and internationally with Aviro's travel eSIM !

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