Turn on Mobile Data and Data Roaming for your Travel eSIM after you arrive at your destination. To avoid roaming charges on your personal line, turn off your local telco SIM or make sure mobile data is set to use the Travel eSIM. 

We do not recommend setting your APN before arrival. If APN setup is needed, update the APN settings only after you arrive at your destination so your device can connect to the correct local network. 

For most destinations, your eSIM validity is counted in 24-hour periods from the time of activation.  

For example, your 4-day Japan eSIM plan will last for exactly 4 days from the moment it's activated, following the 24-hour period format. If you activate your eSIM at 1:33pm on 1 Jan 2026, it will expire at 1:32pm on 5 Jan 2026. 

Only Taiwan (ChungHwa), Thailand and Vietnam eSIM plans reset at 12:00am local time. Their validity is based on the calendar day of activation, not the exact time of activation.  

For example, if you activate a 3-day Thailand eSIM at 2:30pm on 1 Jan 2026, it will expire at 11:59pm on 3 Jan 2026. This means the plan is not valid for a full 72 hours; it is instead counted from the calendar day of activation.  

Yes, you can use your Travel eSIM to hotspot, as long as your mobile device supports this function. 

Yes, you may add another data plan to your existing Travel eSIM. 

However, if you already have an active or existing data plan for the same destination, you will not be able to reload another plan for that same destination onto the same eSIM. In this case, please purchase a new Travel eSIM for that destination. 

No. Travel eSIMs only provide mobile data, so SMS sending and receiving are not supported. 

No. Each Travel eSIM can only be installed and activated on one device. Once it has been activated, it cannot be transferred to another device. 

To remove an eSIM from your phone: 

1. Go to your phone’s “Settings” 
2. Click on “Connections”. 
3. Select “SIM Card Manager/Cellular *” 
4. Tap on the eSIM 
5. Select “Remove Mobile Data/Cellular Plan” 

*Depending on your mobile model. 

Travel eSIMs can only be installed and activated once. If you remove the eSIM from your mobile device, it will no longer be valid for use. If you do not need to use it temporarily, you may disable or pause the eSIM on your device instead. Please note that once the eSIM is activated, the plan validity period will continue and cannot be paused. 

You can check your remaining data balance in Changi App under your Travel eSIM order details. Please note that your device’s own data usage counter may differ from the eSIM data balance shown in Changi App. 

Some areas may not have 5G* coverage. In these areas, your connection may switch to 4G or a lower bandwidth network. Your device should reconnect to 5G automatically when you are back in a 5G-covered area. 

*5G data speed is only applicable for 5G-enabled mobile devices. Additionally, older mobile models may not perform at the desired speed, as compared to newer ones. 

The data usage shown on your mobile device may differ from the eSIM data tracking because your device’s data usage display can take up to 24 hours to update. 

You can view accurate data tracking for the Travel eSIM directly in Changi App. 

Travel eSIM data packages provide wide internet coverage in the selected country. However, signal strength may vary in some areas, including coastal areas. 

e.g. Osaka & Hokkaido coastal areas. 

The QR code for an eSIM is only valid for 60 days from the date of purchase. Please note that it can only be scanned once, for activation on a single mobile device*. 

It is recommended to: 

• purchase the eSIM closer to your flight departure date & 

• activate the eSIM on the date of departure  

*Only for eSIM compatible devices.