Signal but no internet
Check the APN is www.dtac.co, and on iPhone turn off Allow Cellular Data Switching.
How to install your
Thailand eSIM
Scan the QR from your email on Wi-Fi before you fly, set the new line for mobile data, and keep your home number for calls. When you land, turn off airplane mode and you are online.
Your timeline
- 1Before you fly5 minInstall the eSIM on Wi-Fi and set it for mobile data.
- 2On the plane—Airplane mode on. Nothing else to do.
- 3After landing1 minAirplane mode off. The Thailand line connects to True–DTAC.
Before you start
1Your phone supports eSIMDial *#06#. If you see an EID number, the phone can hold an eSIM.
2It is carrier-unlockedA phone locked to your home carrier will refuse a Thai eSIM. Ask your carrier if you are not sure.
3Wi-Fi and a second screenInstall on Wi-Fi, with the QR open on a laptop, tablet, or printout so the phone can scan it.
Not sure about your model? See the eSIM phone list →
Step by step
Pick your phone
Each screen shows what you tap. Highlighted rows are the ones to press.
Install on iPhone
iPhone XS, XR, and newer · 8 steps · about 5 minutes
1Open Settings, then Cellular
Connect to Wi-Fi first. Open Settings and tap Cellular (Mobile Service in some countries).
2Tap Add eSIM
Your home line stays as it is. The Thailand eSIM is added as a second line next to it.
3Choose Use QR Code
Pick Use QR Code. Transfer From Nearby iPhone is for moving an existing line, not for a new eSIM.
4Scan the QR from your email
Open the email or your order page on a laptop, tablet, or printout, and point the camera at the QR.
5Label the new line Thailand
When iPhone asks for labels, keep your home line as Primary and name the new line Thailand.
6Keep calls on your home line
For Default Line choose your home line, so calls, SMS, iMessage, and FaceTime stay on your usual number.
7Use Thailand for Cellular Data
Choose Thailand for Cellular Data and turn off Allow Cellular Data Switching, so data never falls back to your home line.
8After landing: turn the line on
Turn off airplane mode. In Settings, then Cellular, open the Thailand line and check Turn On This Line is on.
On some iOS versions and in some countries, Cellular is called Mobile Service or Mobile Data. The steps are the same.
Install on Samsung Galaxy
Galaxy S20 and newer · 7 steps · about 5 minutes
1Open Settings, then Connections
Connect to Wi-Fi first. Open Settings and tap Connections.
2Tap SIM manager
SIM manager lists every SIM on the phone. Your home SIM stays in place.
3Tap Add eSIM
Under eSIMs, tap Add eSIM. The phone starts looking for a plan to download.
4Choose Scan QR code
Pick the option to scan a QR code from your service provider.
5Scan the QR from your email
Point the camera at the QR on your laptop, tablet, or printout, then confirm to add the eSIM.
6Name it Thailand and set mobile data
Rename the new eSIM Thailand. Under Preferred SIMs, keep Calls and Text messages on Home and set Mobile data to Thailand.
7After landing: switch the eSIM on
Turn off airplane mode and check the Thailand eSIM is switched on in SIM manager. The APN is www.dtac.co and is usually set on its own.
Menu names can differ slightly between One UI versions and regions. Look for SIM manager or SIM card manager under Connections.
Install on Google Pixel
Pixel 3 and newer · 7 steps · about 5 minutes
1Open Settings, then Network & internet
Connect to Wi-Fi first. Open Settings and tap Network & internet.
2Tap SIMs
SIMs shows your home SIM and any eSIMs on the phone.
3Tap Add SIM
Tap Add SIM (or the + button next to SIMs) to start a new eSIM.
4Choose to download a SIM
If the phone asks whether you want to download a SIM instead, tap Next.
5Scan the QR from your email
Point the camera at the QR on your laptop, tablet, or printout. The eSIM downloads in a few seconds.
6Rename it and use it for data
Open the new SIM, rename it Thailand, and turn on Mobile data. Keep calls and SMS on your home SIM.
7After landing: check the line is on
Turn off airplane mode. In SIMs, the Thailand eSIM should show as active for mobile data.
On older Android versions, SIMs may be under Mobile network. Xiaomi, OPPO, and OnePlus use similar names: look for Add eSIM or Download SIM.
Can’t scan the QR?
Enter the code by hand
Below the QR in your email there is an install code that starts with LPA:1$. It holds two values. Choose Enter Details Manually (iPhone) or Enter activation code (Android), and copy them in.
- SM-DP+ Address: the part between the two $ signs.
- Activation Code: everything after the second $ sign.
- Some Android phones accept the whole code in one field. Paste it as it is.
Your Thailand eSIM
Scan this QR, or use the install code below.
Install code (example)
LPA:1$smdp.example.com$ABCD-1234-EFGH-5678
- SM-DP+ Address
- smdp.example.com
- Activation Code
- ABCD-1234-EFGH-5678
Your real code is in your email and on your order page.
When you land
Online in the arrivals hall
- 1
Turn off airplane mode
The phone searches for the local network. It usually connects within a minute.
- 2
Check the Thailand line is on
It should be selected for mobile data. Your home line can stay on for calls and SMS.
- 3
Leave data roaming off
The eSIM is a local True–DTAC line, so it does not need roaming. Keep roaming off on your home SIM.
Outgoing calls and SMS on Unlimited + calls plans
Data and incoming calls work as soon as the eSIM is on. For outgoing calls and SMS, Thailand’s NBTC rules (since May 20, 2026) ask for a quick passport check at any official True or dtac store in Thailand.
The 15 GB and 50 GB data plans have no outgoing calls or SMS, so no store visit is needed.
Troubleshooting
If something doesn’t connect
No Service on the Thailand line
Toggle airplane mode for 10 seconds, or set network selection to Automatic.
QR says already used
The eSIM is probably already on the phone. Turn it on in your SIM list instead of scanning again.
Phone will not add an eSIM
The phone may be carrier-locked or a model without eSIM. Check with *#06# for an EID.
When should I install the Thailand eSIM?+
Before you fly, on Wi-Fi at home or at the airport. Installing needs internet, and in the arrivals hall you may not have it yet.
Can I install the same QR code twice?+
No. Each QR code can be installed once. Do not delete the eSIM during the trip. If you scanned it before, look for it in your SIM list and turn it on.
Do I need to turn on data roaming?+
No. The Thailand eSIM uses the local True–DTAC network, so data roaming is not needed for this line. Keep roaming off on your home SIM.
What is the APN?+
The APN is www.dtac.co. It is usually set automatically. Add it under the line’s mobile network settings only if data does not connect.
Will I keep my WhatsApp number?+
Yes. WhatsApp is tied to your account, not the data line. It keeps working on your usual number while the Thailand eSIM provides the data.
What if my phone cannot scan the QR?+
Use manual entry. The install code below the QR in your email has the SM-DP+ address and the activation code. Enter them as shown in the manual install section.
Do I need to show my passport for the Unlimited + calls plans?+
Only if you want outgoing calls and SMS. Data and incoming calls work right after activation. Under Thailand’s NBTC rules, from May 20, 2026 outgoing calls and SMS on the 8, 15, and 30-day Unlimited + calls plans need a quick passport check at an official True or dtac store in Thailand.
Why can’t I make calls or send SMS on my Unlimited + calls eSIM?+
Outgoing calls and SMS turn on after a quick passport check at a True or dtac store in Thailand, as required by the NBTC since May 20, 2026. Your internet and incoming calls already work, and WhatsApp or LINE calls work over data without the check.
No eSIM yet?
Your QR arrives by email after payment, so you can install it before you pack.
See plans from $8.50