Quick answer
If your Cambodia eSIM has no data after landing, the most common fix is to turn on Data Roaming for the eSIM line. 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, not the eSIM. Work through these in order.
- 1Turn off airplane mode.
- 2Make sure the Cambodia line is switched on.
- 3Turn on Data Roaming for the Cambodia line.
- 4Choose the Cambodia line for mobile data (Cellular Data on iPhone).
- 5Turn airplane mode on for 10 seconds, then off, so the phone searches for the network again.
- 6Restart the phone.
The line shows signal but no internet. What now?
First check Data Roaming again: on iPhone go to Settings, Cellular, the Cambodia 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 Cambodia line, then Cellular Data Network. On Android it is in the eSIM’s settings under Access Point Names. The APN should be mobile.three.com.hk. It is usually set automatically, so only add it if it is missing.
On iPhone, also make sure Allow Cellular Data Switching is off. Otherwise the phone may keep trying your home line.
The phone shows “No Service” on the Cambodia line
Open the network settings for the Cambodia line and turn on automatic network selection, or pick Metfone manually. Wait a minute after landing; the first connection can take a little longer than usual.
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, Telegram, FaceTime, and other apps work over data, so you can still call and message that way. Leave your home SIM on if you need SMS or bank codes, with roaming off on it.
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
How long does the eSIM take to connect after landing?
+
Usually less than a minute after you turn off airplane mode. If nothing happens after a few minutes, check Data Roaming is on for the eSIM, toggle airplane mode, and make sure the line is chosen for mobile data.
Can I reinstall the eSIM if I deleted it?
+
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?
+
No. Plans cannot be topped up. If you need more days or data, buy a new plan; it comes with a new QR code that you install as a second eSIM.
Do I need to turn on data roaming?
+
Yes, for the eSIM line only. It connects to Metfone as a roaming line, and there is no extra charge for roaming on it. Keep Data Roaming off on your home SIM so your carrier does not charge you.
When does my daily 3 GB reset?
+
Days are counted in UTC+8, one hour ahead of Cambodia. Each day ends at 10:59 PM Cambodia time, then your next 3 GB starts. Day 1 ends at that time too, so add a day to your plan.
Related guides
How to install a Cambodia eSIM on iPhone
Scan the QR, label the line, and turn on Data Roaming.
How to install a Cambodia eSIM on Android (Samsung, Pixel)
Samsung Galaxy and Google Pixel steps, from the same QR.
Techo International Airport (KTI) eSIM guide
Phnom Penh’s new international airport, south of the city.