Taiwan eSIM for iPhone: Compatibility, Installation and Setup Guide

Using a Taiwan eSIM on an iPhone is one of the easiest ways to get mobile data during your trip. You can install the digital SIM before departure, keep your regular SIM active and connect after arriving without visiting an airport counter or mobile phone shop.

A travel eSIM is particularly convenient for iPhone users because recent models support Dual SIM functionality. Your home line can remain available for calls, SMS and verification codes while the Taiwan eSIM handles mobile internet.

Before purchasing, confirm that your exact iPhone model supports eSIM and is not locked to a mobile operator. Compatibility can vary by model, sales region and carrier restrictions.

Quick answer: Install the Taiwan eSIM on stable WiFi before travelling. After arrival, turn on the eSIM, select it for Cellular Data, enable Data Roaming on the travel line and disable Cellular Data Switching.

Which iPhones Support eSIM in Taiwan?

Many recent iPhone models support eSIM, but regional differences are important. Two phones with the same model name may have different SIM capabilities depending on where they were sold.

Compatible model families commonly include:

• iPhone XS and iPhone XS Max.
• iPhone XR.
• iPhone 11 series.
• iPhone SE models with eSIM support.
• iPhone 12 series.
• iPhone 13 series.
• iPhone 14 series.
• iPhone 15 series.
• Newer compatible iPhone generations.

This list is a general guide rather than a guarantee. Some regional variants, particularly models intended for specific markets, may not support standard travel eSIM installation.

How to Check Whether Your iPhone Supports eSIM

Complete these checks before purchasing your Taiwan plan.

1. Open Settings.
2. Select General.
3. Open About.
4. Look for an EID entry.
5. Return to Settings and open Cellular or Mobile Service.
6. Check for Add eSIM or Add Cellular Plan.

You can also dial *#06#. If an EID appears, the device includes eSIM hardware. You should still confirm that the phone is carrier-unlocked.

How to Check Whether Your iPhone Is Unlocked

An iPhone locked to one carrier may reject a travel eSIM even when the device technically supports eSIM.

1. Open Settings.
2. Select General.
3. Open About.
4. Scroll to Carrier Lock or Network Provider Lock.
5. Look for a message indicating that there are no SIM restrictions.

If the phone is locked, contact the operator that supplied the device. NoveSIM cannot remove a carrier restriction.

What You Need Before Installing the Taiwan eSIM

• A compatible and unlocked iPhone.
• A stable WiFi connection.
• The eSIM QR code or manual installation details.
• Access to the email or account containing the installation information.
• A second screen if you plan to scan the QR code.

Install the eSIM before departure whenever possible. You need internet access during installation, but the travel plan may activate only after it connects to a supported network in Taiwan, depending on the product conditions.

How to Install a Taiwan eSIM on iPhone With a QR Code

1. Connect the iPhone to dependable WiFi.
2. Open Settings.
3. Select Cellular or Mobile Service.
4. Tap Add eSIM.
5. Select Use QR Code.
6. Scan the QR code displayed on another device.
7. Follow the instructions shown by the iPhone.
8. Wait until the cellular plan has been added.
9. Label the new line Taiwan, Travel or NoveSIM.

Do not scan the QR code with the normal Camera application unless the provided instructions specifically require it. The most reliable method is through the Add eSIM menu in the cellular settings.

How to Install the eSIM Manually

Manual installation is useful when you cannot display the QR code on another screen or when scanning does not work.

1. Open Settings.
2. Select Cellular or Mobile Service.
3. Tap Add eSIM.
4. Select Use QR Code.
5. Choose Enter Details Manually.
6. Enter the SM-DP+ address exactly as supplied.
7. Enter the activation code if one is provided.
8. Complete the installation prompts.

Copy the details carefully without adding spaces. Do not share the activation information publicly because it is linked to your purchased eSIM.

How to Label Your Taiwan eSIM

Clear labels help prevent accidental use of your home SIM for data.

Recommended labels include:

• Taiwan.
• NoveSIM.
• Travel Data.
• Taiwan Internet.

You can edit the label later through the cellular settings. Avoid generic labels such as Secondary when several eSIM profiles are installed.

Recommended iPhone Settings Before Departure

Setting	Recommended Choice
Default Voice Line	Your primary SIM
iMessage and FaceTime	Your normal number or Apple ID
Cellular Data before arrival	Your normal line or no change
Taiwan eSIM profile	Keep installed
Cellular Data Switching	Disable before travel use

Keeping the profile installed does not necessarily start the plan. Activation timing depends on the individual plan, so review the product information before installation.

How to Activate the Taiwan eSIM After Arrival

1. Open Settings.
2. Select Cellular or Mobile Service.
3. Tap the line labelled Taiwan or NoveSIM.
4. Turn on Turn On This Line.
5. Enable Data Roaming on the travel eSIM.
6. Return to the main cellular menu.
7. Select Cellular Data.
8. Choose the Taiwan eSIM.
9. Disable Allow Cellular Data Switching.

Wait a few minutes while the iPhone registers on a supported Taiwanese network. Temporarily turn off WiFi when testing whether mobile data works.

Recommended iPhone Settings in Taiwan

iPhone Setting	Recommended Configuration
Taiwan eSIM	Turned on
Cellular Data	Taiwan eSIM
Data Roaming on Taiwan eSIM	Enabled
Data Roaming on primary SIM	Disabled
Cellular Data Switching	Disabled
Network Selection	Automatic unless support advises otherwise
APN	data.esim

How to Set the APN on iPhone

The APN tells the iPhone how to connect to the mobile data network. Many devices configure it automatically, but you may need to enter it manually.

1. Open Settings.
2. Select Cellular or Mobile Service.
3. Choose the Taiwan eSIM.
4. Open Cellular Data Network if this option is visible.
5. Enter data.esim in the Cellular Data APN field.
6. Leave the username and password empty.
7. Return to the previous menu to save the change.

The Cellular Data Network menu may not appear on every iPhone or network profile. When the field is unavailable, the APN may be managed automatically.

Can You Keep Your Primary SIM Active?

Yes. Your primary SIM can remain active for your usual number while the Taiwan eSIM supplies mobile data.

This setup allows you to:

• Receive verification codes.
• Keep your regular number available.
• Continue using iMessage and FaceTime.
• Use the Taiwan eSIM for maps and internet.

Disable Data Roaming on the primary SIM. Calls and SMS on that line may still create roaming charges according to your home operator’s policy.

How iMessage Works With a Taiwan eSIM

Installing a data-only travel eSIM does not normally require changing your iMessage number.

Before travelling:

1. Open Settings.
2. Select Apps and then Messages, or open Messages directly on older iOS versions.
3. Open Send & Receive.
4. Confirm that your normal number or Apple ID remains selected.

If the iPhone asks whether you want to change your iMessage number after installing the eSIM, keep your existing number unless you intentionally want a different configuration.

How WhatsApp Works on iPhone With a Taiwan eSIM

Your WhatsApp account normally remains connected to your existing telephone number. The Taiwan eSIM simply provides the internet connection.

You can continue using:

• WhatsApp messages.
• Voice calls.
• Video calls.
• Group chats.
• Photo and document sharing.

Do not register WhatsApp again unless the application specifically requires it for an unrelated reason.

Does the Taiwan eSIM Include Calls and SMS?

NoveSIM plans are data-only. They do not include:

• A Taiwanese phone number.
• Traditional voice minutes.
• Standard SMS messages.

You can make internet-based calls through WhatsApp, Viber, Messenger, FaceTime and other VoIP services.

Can You Use Personal Hotspot on iPhone?

Personal Hotspot may be available depending on the selected plan, iPhone configuration and partner network.

To enable it:

1. Open Settings.
2. Select Personal Hotspot.
3. Turn on Allow Others to Join.
4. Connect the second device using the displayed WiFi password.

If Personal Hotspot is missing or does not work, confirm that the Taiwan eSIM is selected for Cellular Data and that the APN is set correctly.

Laptops can consume mobile data quickly through updates, cloud synchronisation and video meetings. Monitor your usage carefully.

How Much Data Should iPhone Users Choose?

Trip Length or Usage	Suggested Data
3–5 days with WiFi	3GB–5GB
One week	5GB–10GB
Two weeks	10GB–15GB
Three to four weeks	15GB–30GB
Hotspot or remote work	30GB+ or suitable unlimited-style plan

iCloud Photos, automatic application updates and video streaming can consume data quickly. Configure these services to use WiFi only when you want a smaller package to last longer.

How to Reduce iPhone Data Usage in Taiwan

Enable Low Data Mode

1. Open Settings.
2. Select Cellular.
3. Choose the Taiwan eSIM.
4. Open Data Mode.
5. Select Low Data Mode.

Pause iCloud backups

Keep iCloud backups and full-resolution photo synchronisation on WiFi. Travel photos and videos can use several gigabytes.

Disable automatic downloads

Prevent application updates, music downloads and other background transfers from using the Taiwan eSIM.

Download maps and entertainment

Save offline maps, playlists, podcasts and videos while connected to hotel WiFi.

What to Do If the Taiwan eSIM Does Not Connect

1. Confirm that the Taiwan eSIM is turned on.
2. Select it under Cellular Data.
3. Enable Data Roaming on the travel line.
4. Disable Cellular Data Switching.
5. Turn off WiFi and test mobile internet.
6. Check that the APN is data.esim.
7. Turn Airplane Mode on for 30 seconds and then off.
8. Restart the iPhone.
9. Move outdoors or closer to a populated area.

Do not delete the eSIM while troubleshooting. Some installation codes are single-use and cannot be scanned again.

Why the iPhone Shows No Service

No Service may appear temporarily while the phone searches for a supported network. It can also result from incorrect settings or weak local coverage.

Check that:

• You are already in Taiwan or another included destination.
• The travel line is enabled.
• Data Roaming is turned on for the eSIM.
• Network Selection is set to Automatic.
• The phone is not locked to another carrier.
• The plan is still valid and has remaining data.

Why the iPhone Has Signal but No Internet

Signal bars without working data often indicate that the wrong line is selected for Cellular Data or that the APN is missing.

Verify:

• Cellular Data is assigned to the Taiwan eSIM.
• The APN is data.esim.
• Data Roaming is enabled.
• Automatic data switching is disabled.
• WiFi is turned off during the test.

Should You Select a Network Manually?

Keep Network Selection on Automatic in most situations. The eSIM should register with an available supported partner network.

Manual selection may help only when the phone cannot connect automatically and customer support provides specific instructions. Not every visible network is included in the plan.

Can You Transfer the eSIM to Another iPhone?

Travel eSIM profiles usually cannot be transferred freely between phones through Apple’s standard eSIM transfer function. The QR code may be valid for one installation only.

Install the eSIM on the iPhone you intend to use in Taiwan. Do not delete it or attempt to move it to another device without checking with support first.

Can You Top Up the Same Taiwan eSIM?

NoveSIM plans cannot normally be topped up or extended using the same QR code. If your data or validity expires, purchase a new plan and install the new eSIM profile.

You need WiFi or another internet connection to complete the new installation. Arrange the replacement before the existing connection stops working.

Can More Than One eSIM Be Stored on an iPhone?

Many compatible iPhones can store several eSIM profiles, although the number of active lines at the same time depends on the model.

Label each travel profile clearly and turn off profiles that are not currently needed. Do not delete an old profile until you are certain it will not be used again.

Related Articles

• Best eSIM for Taiwan
• How to Install an eSIM for Taiwan
• Does My Phone Support eSIM in Taiwan?
• Mobile Internet in Taiwan
• How Much Data Do You Need for Taiwan?

FAQ

Can I use a Taiwan eSIM on my iPhone?

Yes, provided your exact iPhone model supports eSIM and is carrier-unlocked. Check for an EID and the Add eSIM option before purchasing.

Should I install the Taiwan eSIM before travelling?

Yes. Install it on stable WiFi before departure, then select it for Cellular Data and enable Data Roaming after arriving in Taiwan.

Why must Data Roaming be enabled on the travel eSIM?

The eSIM connects through supported partner networks, so Data Roaming must be enabled on the travel line for mobile internet to work.

Can I keep my normal SIM in the iPhone?

Yes. Keep your primary SIM active for your normal number while using the Taiwan eSIM for cellular data. Disable roaming on the primary line.

Will iMessage still work with my normal number?

Yes. Keep your existing number or Apple ID selected under Send & Receive. The travel eSIM only supplies mobile internet.

What APN should I use on iPhone?

Use data.esim when manual APN configuration is required. Leave the username and password empty.

Can I delete and reinstall the eSIM?

Do not delete it while troubleshooting. Some QR codes are single-use and may not work again after the profile is removed.

Does the Taiwan eSIM include a local phone number?

NoveSIM plans are data-only and do not include a Taiwanese number, traditional voice calls or standard SMS.

Final Recommendation

A Taiwan eSIM is an excellent option for compatible iPhones because it provides mobile data without removing your regular SIM. Check for an EID, confirm that the phone is unlocked and complete the installation before departure on stable WiFi.

After arriving, turn on the travel line, select it for Cellular Data, enable Data Roaming and disable Cellular Data Switching. Keep roaming turned off on your primary SIM to reduce the risk of unexpected charges.

Do not delete the eSIM during troubleshooting. Check the mobile data line, roaming setting and APN first. With the correct configuration, your iPhone can provide reliable internet for navigation, transport, communication and travel throughout Taiwan.