eSIM Not Working? Common Problems & Fixes

If your eSIM is not working, the issue is usually related to activation, device compatibility, network coverage, or incorrect settings. This guide explains the most common causes and provides clear, step-by-step solutions to help you get your eSIM connected quickly.

1. Why my eSIM is not working?

There are several reasons why an eSIM may not work as expected while travelling. Below are the most common causes travellers run into:

1.1 eSIM not activated properly

This issue usually happens when the eSIM is installed but not fully activated. The most common activation-related problems include:

QR code scanned but activation incomplete

Scanning the QR code only downloads the eSIM profile to your phone. In many cases, mobile data will not start working until the eSIM connects to a supported network. As a result, the eSIM may appear installed but show “No Service” or no data connection.

Activation requires destination network

An eSIM needs three things to work properly: a compatible device, an active data plan, and network coverage. If the phone cannot connect to a supported mobile network, the eSIM does not work. This often happens before travel, when the device is outside the coverage area of the destination network.

eSIM installed too early or too late

Installing an eSIM too early may result in an installed profile without network access, as activation depends on available coverage. Installing it too late can also cause issues if there is no internet connection to complete setup or download network settings. In both cases, the eSIM may appear installed but remain inactive until all activation conditions are met. The recommended approach is to install the eSIM before departure and activate it once you arrive and connect to a local network.

→ Find Out About: What is eSIM and How does eSIM Work?

1.2 Device not compatible with eSIM

Even when the setup process is completed correctly, an eSIM activated but not working can occur if the phone model, regional variant, or carrier lock does not fully support eSIM functionality.

Phone model does not support eSIM

Not all smartphones support eSIM technology. While many newer devices from major brands such as Apple, Samsung, and Google Pixel offer eSIM functionality, older models or budget devices may not have the required hardware. Having a modern smartphone does not automatically guarantee eSIM support, so it is important to confirm compatibility with the manufacturer or the eSIM provider before activation.

→ Read more: How to Check If My Phone Is eSIM Compatible in Simple Steps

Regional device limitations

An eSIM may fail to install or may not appear as an option, despite the device being listed as eSIM compatible in other regions. For example, eSIM not working on iPhone models sold in mainland China is common because these devices use dual physical SIM slots and do not support eSIM at all, even though the same iPhone models sold in Europe or the US do. Similar limitations can also apply to certain Samsung or Android models, where eSIM support depends on the market or firmware version.

Carrier-locked phones

Phones that are locked to a specific carrier may restrict the use of eSIMs from other providers. In this case, the device may allow eSIM installation but block activation or network access. Checking the carrier lock status in the device settings helps confirm whether the phone is unlocked. If the device is locked, activation may require contacting the original carrier for guidance or unlocking the phone before using a third-party eSIM.

1.3 No network coverage at destination

An eSIM relies on local mobile networks in the same way as a physical SIM. If there is no compatible network available, the eSIM cannot connect, even if it has been installed and activated correctly.

Unsupported country or region

eSIM plans are limited to specific countries or regions. If you arrive at a destination that is not included in your plan, the eSIM will show “No Service” and mobile data will not work. Always check the coverage list provided by the eSIM provider before travelling.

Temporary local network outage

Mobile networks can experience temporary issues due to maintenance, technical faults, or high network congestion. In these cases, an eSIM may suddenly lose connection or fail to register on the network, even in urban areas. Switching airplane mode on and off, restarting the device, or manually selecting another available network can help reconnect once the network is stable again.

Rural or remote areas

Network coverage can be limited or unavailable in rural locations, mountains, islands, or remote regions. Since eSIMs use the same cellular infrastructure as physical SIM cards, poor coverage in these areas affects both equally. If there is no signal from any local carrier, the eSIM will not be able to connect until you move to an area with better coverage.

1.4 Incorrect APN or network settings

Even when an eSIM is installed and active, incorrect network settings can prevent it from accessing mobile data. These issues are common and are usually related to APN configuration, network selection, or roaming settings.

APN not auto-configured

APN settings define how your device connects to the mobile data network. In most cases, APN details are set automatically during activation, but this does not always happen. If the APN is missing or incorrect, the eSIM may show a signal but have no mobile data. Checking the APN settings and entering the values provided by the eSIM provider can resolve this issue.

Wrong network selected

Phones normally select a network automatically, but this can fail or connect to a network that does not support the eSIM plan. When this happens, the device may show weak signals or no data connection. Manually selecting a supported local network from the available list often helps restore service.

Data roaming turned off

Most travel eSIMs require data roaming to be enabled in order to connect to partner networks abroad. If data roaming is turned off, the eSIM will not access mobile data, even when coverage is available. Turning on data roaming in the eSIM settings is a necessary step when using an eSIM outside your home country.

→  Read About: eSIM Connected but No Internet? Here’s How to Fix

1.5 Multiple eSIMs or dual SIM conflicts

Using more than one SIM on the same device can sometimes cause conflicts, especially if the settings are not configured correctly. This is common on phones that support dual SIM or multiple eSIM profiles.

Wrong eSIM selected for mobile data

When several SIMs or eSIMs are installed, the phone allows only one line to be used for mobile data at a time. If the wrong SIM is selected as the data line, the eSIM may appear active but will not provide internet access. Checking that the correct eSIM is set as the default mobile data line usually resolves this issue.

Physical SIM overriding eSIM

In some cases, a physical SIM may automatically take priority for mobile data, especially if it is set as the primary line. This can cause the eSIM to be ignored for data usage, even when it is turned on. Temporarily disabling mobile data on the physical SIM can help ensure the eSIM is used instead.

iPhone and Android dual SIM settings

Dual SIM settings work differently across devices. On iPhones, features like automatic data switching can move data usage back to another SIM without notice. On Android devices, data, calls, and messages are often managed separately for each SIM. Reviewing these settings helps avoid conflicts and ensures the eSIM is correctly assigned for mobile data.

2. How to fix eSIM not working (Step-by-step)

2.1 Check if the eSIM is installed correctly

On iPhone

1. Go to Settings → Cellular

2. Tap eSIMs

3. Check that:

• The eSIM profile appears in the list

• The eSIM is turned on

4. If the eSIM is missing:

• Tap Add eSIM

• Rescan the QR code or reinstall the eSIM

On Android

1. Go to Settings → Network & Internet → SIMs

2. Check that:

• The eSIM profile is listed

• The eSIM is enabled

3. If the eSIM does not appear:

• Tap Add mobile plan

• Rescan the QR code or reinstall the eSIM

Note: 

After this step:

• If the eSIM does not appear, the issue is likely an eSIM installation problem.

• If the eSIM appears but has no network connection, proceed to check APN settings, network selection, or dual SIM conflicts.

2.2 Make sure mobile data is assigned to the eSIM

If your phone uses dual SIM, mobile data may still be linked to the physical SIM instead of the eSIM. Follow the steps below to ensure the eSIM is set as the data line.

On iPhone

1. Go to Settings → Cellular → Cellular Data

2. Select the eSIM as the default mobile data line

3. Turn off Allow Cellular Data Switching if the phone keeps switching back to the physical SIM

On Android

1. Go to Settings → Network → Mobile Data

2. Choose the eSIM for mobile data usage

3. Temporarily disable mobile data on the physical SIM if needed

Once mobile data is correctly assigned to the eSIM, wait a few seconds for the network to connect.

Notes:

• Make sure the eSIM is turned on before assigning it as the mobile data line.

• If the phone keeps using the physical SIM for data, disable mobile data on the physical SIM temporarily.

• Some devices require a restart after changing the default data line.

• On iPhone, if Allow Cellular Data Switching is enabled, the device may ignore the eSIM when signal is weak.

2.3 Turn on data roaming

Most travel eSIMs require data roaming to be enabled in order to connect to local networks.

On iPhone

1. Go to Settings → Cellular → eSIM

2. Tap Data Roaming

3. Toggle it ON

On Android

1. Go to Settings → Network → Mobile Network

2. Enable Data Roaming

3. Restart the phone if the network does not connect immediately

Once data roaming is enabled, wait a few moments for the eSIM to register on the local network.

2.4 Manually select a network operator

If the eSIM does not connect automatically, manually choosing a local network can help establish a connection.

On iPhone

1. Go to Settings → Cellular → eSIM → Network Selection

2. Turn off Automatic

3. Select a supported local carrier from the list

On Android

1. Go to Settings → Mobile Network → Network Operators

2. Disable Automatic network selection

3. Choose the strongest available network

2.5 Check and update APN settings

APN settings control how your phone connects to mobile data. In most cases, travel eSIMs configure this automatically, but it may fail on some devices.

On iPhone

1. APN is usually auto-configured and cannot be edited

2. If editable:

• Go to Settings → Cellular → eSIM → Cellular Data Network

• Leave the APN blank or enter the APN provided by your eSIM provider

On Android

1. Go to Settings → Mobile Network → Access Point Names (APN)

2. Add a new APN or edit the existing one using the exact details from your eSIM provider

3. Save and select the correct APN

After updating the APN, wait a few seconds or restart the device if mobile data does not connect.

Notes:

• Only use the APN provided by your eSIM provider.

• If no APN is specified, do not add one manually. Leave the APN field blank.

• Incorrect APN settings may cause the eSIM to show a signal but mobile data will not work.

2.6 Restart phone or use airplane mode trick

Refreshing the network connection can help the eSIM reconnect to the local network.

On iPhone

1. Turn Airplane Mode ON for about 30 seconds

2. Turn it OFF and wait for the signal to appear

3. Restart the device if the network does not connect

On Android

1. Enable Airplane Mode, wait a few seconds, then disable it

2. Reboot the phone if no signal appears

After the restart or airplane mode reset, allow a short time for the eSIM to register on the network.

When an eSIM not working, the problem is often due to activation errors, unsupported devices, missing network coverage, or misconfigured data settings. By following this guide, you can resolve most cases where an eSIM is activated but not working and get connected quickly without needing technical support.