Does My eSIM Work in Taiwan? Coverage and Compatibility Guide

Your eSIM can work in Taiwan if the plan includes Taiwan, your phone supports eSIM and the device is carrier-unlocked. You must also configure the travel profile correctly after arrival by selecting it for mobile data and enabling Data Roaming.

An eSIM already installed for another country does not automatically provide internet in Taiwan. Its coverage depends on the destination list attached to the plan. A regional or global eSIM may include Taiwan, while a single-country plan purchased for a different destination usually will not.

Before travelling, check the plan name, included countries, remaining validity and available data. Do not assume that every stored eSIM profile can connect in Taiwan simply because it remains visible in your phone settings.

Quick answer: Your eSIM should work if Taiwan is included in its coverage, the plan is still valid, your phone is compatible and unlocked, and the travel profile is selected for mobile data with Data Roaming enabled.

How to Check Whether Your eSIM Covers Taiwan

The most important check is the destination coverage of the exact plan you purchased.

Review:

• The product name.
• The included-country list.
• The order confirmation.
• The eSIM details in your customer account.
• The plan’s activation and validity conditions.

A plan may fall into one of several categories:

Plan Type	Will It Work in Taiwan?
Taiwan single-country eSIM	Yes, within the plan conditions
Asia regional eSIM including Taiwan	Yes
Global eSIM including Taiwan	Yes
Single-country eSIM for another destination	Usually no
Regional plan without Taiwan	No

If Taiwan does not appear in the included destinations, purchase a separate Taiwan or suitable regional eSIM.

Does an eSIM Purchased for Another Country Work in Taiwan?

Usually not. A single-country plan is generally limited to the destination for which it was purchased.

For example, an eSIM purchased only for Japan, Thailand or South Korea does not necessarily work after entering Taiwan. It will work only if the product is a regional or global plan that explicitly includes Taiwan.

The phone may continue displaying the installed profile even when it has no valid Taiwanese coverage. An installed eSIM and an active Taiwan data plan are not the same thing.

Can a Regional Asia eSIM Work in Taiwan?

Yes, provided Taiwan is listed among the included destinations. Regional plans can be useful for travellers visiting several Asian countries during one journey.

Before relying on the plan, verify:

• Taiwan is included.
• The plan has not expired.
• There is remaining data.
• The validity period covers the Taiwan portion of the trip.
• The profile has not been deleted or moved to another device.

Coverage lists can differ between regional products, so check your exact plan rather than relying only on the phrase Asia eSIM.

Will a Global eSIM Work in Taiwan?

A global eSIM may work in Taiwan when the country is included in its coverage list. Global does not always mean every country, so verify the exact destinations before departure.

Also compare the data allowance and validity. A global plan may be convenient for multi-country travel, while a dedicated Taiwan plan can be more suitable when most of your trip takes place on the island.

Check Whether Your Phone Supports eSIM

Even a valid Taiwan plan cannot work on a phone without eSIM support.

Use these checks:

1. Open the Phone application.
2. Dial *#06#.
3. Look for an EID number.
4. Open your SIM or mobile network settings.
5. Look for Add eSIM, Add Cellular Plan, Add SIM or a similar option.

An EID normally indicates that the device includes eSIM hardware. However, compatibility can still depend on the exact regional model.

Check Whether Your Phone Is Unlocked

A carrier-locked phone may prevent a travel eSIM from connecting or installing, even when the device technically supports eSIM.

Check an iPhone

1. Open Settings.
2. Select General.
3. Open About.
4. Find Carrier Lock or Network Provider Lock.
5. Confirm that no SIM restrictions are shown.

Check an Android phone

Android lock information varies by manufacturer. Review the original operator account, device contract or contact the carrier that supplied the phone.

Only the original operator can normally remove a carrier lock.

Check Whether the eSIM Is Already Installed

An installed travel eSIM should appear as a separate line in your cellular or SIM settings. It may be labelled:

• Taiwan.
• NoveSIM.
• Travel.
• Secondary.
• SIM 2.
• Business or Personal.

On iPhone, check:

Settings → Cellular or Mobile Service

On Samsung, check:

Settings → Connections → SIM Manager

On Google Pixel, check:

Settings → Network & Internet → SIMs

If the profile is already visible, do not scan the QR code again. Configure the installed line instead.

Installation Does Not Confirm Taiwan Coverage

Your phone can store several eSIM profiles, including expired plans and plans for other countries. Seeing an eSIM in the settings only confirms that its digital profile is installed.

It does not confirm:

• That Taiwan is included.
• That the plan is still valid.
• That data remains available.
• That the line is selected for mobile data.
• That the phone has registered on a supported network.

How to Make the eSIM Work After Arriving in Taiwan

After landing, complete these steps:

1. Turn on the Taiwan or regional eSIM profile.
2. Select it as the preferred line for mobile data.
3. Enable Data Roaming on the travel eSIM.
4. Disable Data Roaming on your home SIM.
5. Turn off automatic mobile data switching.
6. Keep Network Selection on Automatic.
7. Wait several minutes for registration.
8. Turn off WiFi and test mobile internet.

If the plan includes Taiwan and all settings are correct, the phone should connect to a supported local partner network.

Recommended Taiwan eSIM Settings

Setting	Travel eSIM	Home SIM
Line enabled	Yes	Optional
Selected for mobile data	Yes	No
Data Roaming	Enabled	Disabled
Automatic data switching	Disabled
Network selection	Automatic	Automatic or unchanged
APN	data.esim	Unchanged

Why Data Roaming Must Be Enabled

Travel eSIMs connect through supported partner networks in the destination. For this reason, Data Roaming usually needs to be enabled on the travel profile.

This does not mean that you must enable roaming on your regular SIM. The two lines normally have separate settings.

Use this configuration:

• Roaming enabled on the travel eSIM.
• Roaming disabled on the primary SIM.
• Travel eSIM selected for mobile data.
• Automatic switching disabled.

What APN Should the eSIM Use in Taiwan?

The APN may configure automatically. If the phone has signal but no working internet, check the access point settings.

Field	Value
Name	NoveSIM or Taiwan
APN	data.esim
Username	Leave empty
Password	Leave empty

After saving the APN, select it as the active access point on Android. Toggle Airplane Mode for 30 seconds or restart the phone to apply the change.

Does the eSIM Need to Be Activated in Taiwan?

Installation and network activation are separate processes. You can normally install the profile before departure on stable WiFi, while its first network connection may occur after arriving in Taiwan.

The exact validity start depends on the product. Some plans begin when they first connect to an included network, while others may follow different conditions.

Review your plan information before enabling it early.

How to Test Whether the eSIM Works

1. Confirm that you are inside Taiwan.
2. Turn off WiFi.
3. Check that the travel eSIM is selected for mobile data.
4. Open a webpage or maps application.
5. Wait several minutes during the first test.
6. Check whether a 4G, LTE or 5G indicator appears.

Signal bars alone do not guarantee working data. Always test a website with WiFi disabled.

Why the eSIM Shows No Service

No Service means that the profile has not registered on an available supported network.

Possible reasons include:

• Taiwan is not included in the plan.
• The eSIM line is turned off.
• The phone is carrier-locked.
• The plan has expired.
• The profile was installed on another device.
• Network Selection is set incorrectly.
• You are in a tunnel, basement or weak-signal area.

Keep Network Selection on Automatic unless customer support gives you a specific operator to select.

Why the eSIM Has Signal but No Internet

Signal without internet usually means that the phone has registered on a network but the mobile data settings are incomplete.

Check:

• The travel eSIM is selected for mobile data.
• Data Roaming is enabled.
• The APN is data.esim.
• Automatic data switching is disabled.
• The plan still has data and validity.
• WiFi is turned off during testing.

Why the eSIM Worked in Another Country but Not Taiwan

A plan can work in one destination and stop after crossing a border when the new country is not included in its coverage.

Other possible reasons are:

• The plan expired during the trip.
• The total data allowance was used.
• The validity covers fewer days than the complete journey.
• The phone has not yet registered on a Taiwanese partner network.
• Mobile data settings changed while switching countries.

Check the included-country list and repeat the data-line and roaming configuration after entering Taiwan.

Will a Taiwan eSIM Work Throughout the Island?

A Taiwan-wide plan can normally be used across the destinations included in its network coverage.

It can support travel in and around:

• Taipei.
• Taoyuan.
• Taichung.
• Tainan.
• Kaohsiung.
• Hualien.
• Kenting.
• Other covered areas.

Signal quality may vary in mountains, tunnels, underground stations and remote coastal regions. Download offline maps before visiting isolated destinations.

Will the eSIM Work on Taiwan Trains?

Mobile data can normally be used while travelling by High-Speed Rail and local trains where network coverage is available.

Temporary interruptions may occur inside:

• Railway tunnels.
• Mountain sections.
• Underground stations.
• Remote parts of the east coast.

A temporary loss of signal in these locations does not necessarily indicate a problem with the eSIM.

Will the eSIM Work at Taiwan Airports?

A valid Taiwan plan can normally connect at airports where a supported partner network is available. The first connection may take several minutes after landing.

If it does not connect immediately:

1. Move away from underground arrival areas.
2. Confirm the travel line is enabled.
3. Select it for mobile data.
4. Enable Data Roaming.
5. Toggle Airplane Mode for 30 seconds.

Can You Keep Your Home SIM Active?

Yes. A compatible Dual SIM phone can keep your primary SIM active while the travel eSIM supplies mobile data.

This allows you to:

• Keep your regular number.
• Receive verification messages.
• Use iMessage with your existing number.
• Continue using WhatsApp normally.

Your home operator may charge for traditional calls and SMS received or made abroad. Check its roaming policy.

Does the eSIM Include a Taiwanese Number?

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

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

You can make internet calls using WhatsApp, Viber, Messenger, FaceTime and other VoIP applications.

Will WhatsApp Work With the eSIM?

Yes. WhatsApp normally remains registered to your existing phone number. The travel eSIM only supplies the internet connection.

You can continue using:

• Messages.
• Voice calls.
• Video calls.
• Group chats.
• Photo and document sharing.

Do not register WhatsApp again unless you intentionally want to change its account number.

Can You Use Hotspot With the eSIM?

Hotspot may be available depending on the plan, device and partner network.

Before sharing the connection, confirm that:

• The travel eSIM is selected for mobile data.
• The plan supports tethering.
• The APN is correctly configured.
• The connected device has automatic updates disabled.

Hotspot, cloud backups and video streaming can use the allowance quickly.

What If the Plan Has Expired or Run Out of Data?

An expired or fully used plan will no longer provide normal mobile internet even though its profile remains installed.

NoveSIM plans cannot normally be topped up or extended on the same QR code. Purchase and install a new eSIM when you need additional data or validity.

A working internet connection is required for the new installation. Use hotel, airport or another secure WiFi network before the current plan ends.

What If an Unlimited-Style Plan Becomes Slow?

A slower connection does not necessarily mean that the eSIM has stopped working.

NoveSIM unlimited-style plans include 1GB of high-speed data during each 24-hour period. After that daily allowance is used, speed may be reduced until the next 24-hour reset.

Reduced speed may still support messages, basic maps and light browsing, but video streaming and large downloads may be difficult.

Do Not Delete a Working or Installed eSIM

Do not remove the profile because it fails to connect immediately. Many travel eSIM QR codes are valid for one installation only.

Deleting the eSIM may prevent you from reinstalling it with the same code.

Before removing anything, check:

• Destination coverage.
• Remaining validity.
• Remaining data.
• Mobile data selection.
• Data Roaming.
• APN.
• Network registration.

Complete Troubleshooting Checklist

1. Confirm Taiwan is included in the plan.
2. Check that the plan has not expired.
3. Confirm remaining data is available.
4. Turn on the travel eSIM.
5. Select it for mobile data.
6. Enable Data Roaming.
7. Disable automatic data switching.
8. Keep Network Selection on Automatic.
9. Set the APN to data.esim if required.
10. Turn off WiFi and test mobile internet.
11. Toggle Airplane Mode for 30 seconds.
12. Restart the phone.
13. Test again outdoors or in a populated area.

Keep the eSIM installed throughout these checks.

Information to Give Customer Support

If the plan includes Taiwan but still does not work, provide:

• Your order number.
• The exact name of the purchased plan.
• Your current location in Taiwan.
• Your phone make and model.
• Whether the phone shows No Service or signal bars.
• A screenshot of the SIM settings.
• A screenshot of the APN settings.
• The network name shown by the phone.
• Confirmation that Data Roaming is enabled.

Do not publicly share the complete QR code or manual activation details.

Related Articles

• Does My Phone Support eSIM in Taiwan?
• eSIM Not Working in Taiwan
• How to Use an eSIM in Taiwan
• How to Activate a Taiwan eSIM
• Best eSIM for Taiwan

FAQ

How do I know whether my eSIM works in Taiwan?

Check that Taiwan appears in the plan’s included-country list, the plan remains valid and your phone supports eSIM and is unlocked.

Will an eSIM bought for another country work in Taiwan?

Usually not. It will work only when the plan is regional or global and explicitly includes Taiwan.

Why is the eSIM installed but not working?

Installation only stores the profile. Select it for mobile data, enable Data Roaming and confirm that Taiwan is included in the plan.

What APN should I use in Taiwan?

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

Can I use the same eSIM throughout Taiwan?

Yes. A Taiwan-wide or regional plan including Taiwan can normally be used across its included coverage areas.

Does my eSIM work before I arrive in Taiwan?

You can usually install it before departure, but network activation may begin only after connecting to an included network in Taiwan.

Should I delete the eSIM if it does not connect?

No. Check coverage, validity and settings first because the QR code may be valid for one installation only.

Can I keep my home SIM active?

Yes. Keep the home SIM for your normal number, but disable its Data Roaming and use the travel eSIM for mobile data.

Final Recommendation

Your eSIM should work in Taiwan when the exact plan includes the country, remains valid and has available data. Your phone must also support eSIM and be free from carrier restrictions.

After arrival, turn on the travel profile, select it for mobile data, enable Data Roaming and disable automatic switching. If the phone has signal but no internet, verify that the APN is data.esim.

Do not delete an installed eSIM while troubleshooting. Confirm the destination coverage and settings first, then test again with WiFi disabled and after toggling Airplane Mode for 30 seconds.