Quick answer
If your Singapore eSIM has no data after landing, turn on Data Roaming for this eSIM. Then check the line is on and chosen for mobile data, turn airplane mode on and off once, and confirm the APN is mobile.three.com.hk.
What should I check first?
Most problems are a setting. Work through these in order.
- 1Turn off airplane mode.
- 2Make sure the Singapore line is switched on.
- 3Turn on Data Roaming for the Singapore line.
- 4Choose the Singapore line for mobile data (Cellular Data on iPhone).
- 5Turn airplane mode on for 10 seconds, then off.
- 6Restart the phone.
The line shows signal but no internet. What now?
Check Data Roaming again: on iPhone go to Settings, Cellular, the Singapore line; on Samsung go to Connections, then Mobile networks; on Pixel open the SIM under Network & internet, then SIMs.
Then check the APN. On iPhone it is under the Singapore line, then Cellular Data Network. On Android it is under Access Point Names. The APN should be mobile.three.com.hk. That string is the APN only.
On iPhone, also make sure Allow Cellular Data Switching is off, so the phone does not fall back to your home line.
The phone shows “No Service” on the Singapore line
Open the network settings for the Singapore line and turn on automatic network selection. This eSIM is 4G roaming. The same eSIM also works in Malaysia.
Data works, but I can’t make calls or send SMS
That is expected. The eSIM is data only, with no phone number, calls, or SMS. WhatsApp calls work over this data. Keep Data Roaming off on your home SIM. TikTok and most AI apps, such as ChatGPT, may not work on this eSIM.
Still not working?
Connect to Wi-Fi and email admin@kovitel.com or message us on Telegram, with your order link and a screenshot of the SIM settings. Your QR and order details stay on your order page.
Frequently asked questions
What should I do if it does not connect after landing?
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Turn off airplane mode, turn on Data Roaming for this eSIM, and make sure the Singapore line is chosen for mobile data. Then toggle airplane mode once.
Can I reinstall the eSIM if I deleted it?
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No. Each QR scans once. Email admin@kovitel.com or message us on Telegram with your order link if you deleted the eSIM by mistake.
Can I top up the eSIM?
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No. Plans cannot be topped up. If you need more days or data, buy a new plan. It comes with a new QR code.
Do I need to turn on data roaming?
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Yes, for this eSIM only. It is a 4G roaming eSIM, and there is no extra charge. Keep Data Roaming off on your home SIM.
When do my plan days start?
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Days start when the eSIM first connects to a network. Installing the day before the flight uses no days. Pick one day more than the stay.
Will TikTok or ChatGPT work?
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TikTok and most AI apps, such as ChatGPT, may not work on this eSIM.