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Supported phones and model or market restrictions.

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| What you see on the handset | What it means | 다음에 할 일 |
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| Device family | The menu generally sits under | Worth knowing |
|---|---|---|

자주 묻는 질문
My phone is a few years old — can it still use an eSIM?+
Age is not what decides it — the presence of an eSIM chip is. Dial *#06# and look for an EID line. If it is there, the handset is ready and only the carrier-lock question remains. If there is no EID and no add-cellular-plan menu, that phone cannot use an eSIM, and no update will change that.
I bought a second-hand phone — how do I know it is a supporting variant?+
Do not go by the model name alone, since different market variants share it. Switch the phone on, dial *#06# and see whether an EID appears, then open the cellular settings and look for an add-eSIM option. Those two checks answer it from the handset itself. If you have not bought yet, ask the seller for a screenshot of what *#06# returns.
Can I install an eSIM on a phone issued by my employer?+
It depends on the policy your IT team has applied. A fair number of corporate handsets are configured to hide the add-profile menu or to block new lines, even though the chip is present. If the menu will not open, or says it is restricted by an administrator, ask your IT team first — the restriction sits on the device, not on the plan.
Will my existing Thai number keep working after I install an eSIM?+
Yes, as long as the handset supports two active lines. Your existing SIM keeps taking calls and SMS as usual. What has to be set correctly is choosing the eSIM as the mobile data line and leaving data roaming off on the home line, so you do not run up roaming charges from your own operator by accident.
The phone supports eSIM but the install still fails — what causes that?+
In rough order of frequency: an unstable connection during installation, a VPN left switched on, a carrier lock, or a QR that has already been used once. Get onto stable Wi-Fi, turn the VPN off and try once more. If it still fails, do not delete anything — send us the error text along with your order number.
I carry two phones — can one plan be swapped between them?+
Generally no, because the profile is issued to the chip in the phone it was first installed on. If you need data on both at once, the straightforward route is running a hotspot from the phone holding the eSIM and connecting the second device to it — checking before purchase that the plan you choose allows hotspot sharing.
Common questions in this section
Can I move an eSIM to a new phone?+
Most travel plans are bound to the phone where they were first installed and cannot be moved. Some phones offer eSIM transfer between devices of the same brand, but the issuing operator must permit it. If you must change phones mid-trip, contact us before deleting anything.
How do I check whether my phone supports eSIM?+
The quickest check: open cellular settings and look for 'Add eSIM' or 'Add cellular plan'. On iPhone, dialling *#06# shows an EID — if an EID exists the hardware has an eSIM chip. Also confirm the phone is not carrier-locked.
Can a carrier-locked phone use a travel eSIM?+
No. A carrier-locked phone refuses profiles from other networks. Ask the operator you bought it from to unlock it before you travel. Handsets bought outright are usually unlocked.
My phone does not support eSIM — what are my options?+
Practical options: a local physical SIM, a pocket Wi-Fi device, or a roaming pack from your home operator. Alternatively, use a spare phone that does support eSIM and share its hotspot to your main device.
Why does the same model support eSIM in one country but not another?+
Makers ship different hardware variants per market; some drop the eSIM chip in favour of two physical SIM slots. This is most common with handsets sold in mainland China and some Hong Kong variants. Always verify the EID on the actual device before buying a plan.
Can I keep several eSIM profiles on one phone?+
Yes. Modern phones store multiple profiles but only a limited number can be active at once (commonly one or two lines including the physical SIM). For a multi-country trip, install them all in advance and switch which one is active as you go.
Does a phone with no SIM tray work?+
Yes: eSIM-only phones are built around downloaded profiles. Check that the device is not carrier-locked, and see how many profiles it can store, since you will keep both your main line and the travel plan on it.
Can a smartwatch use one of your plans?+
Usually not. Most cellular watches rely on a service tied to your main operator rather than a self-installed travel profile. Check with your operator, and while travelling use the watch paired to your phone instead.
Can a tablet use your eSIM?+
Yes, if it is a cellular model that supports eSIM. Check the manufacturer's specification for your exact model before buying, since the same tablet is often sold in both Wi-Fi-only and cellular versions.
Read each answer in full
- Can I move an eSIM to a new phone?
- How do I check whether my phone supports eSIM?
- Can a carrier-locked phone use a travel eSIM?
- My phone does not support eSIM — what are my options?
- Why does the same model support eSIM in one country but not another?
- Can I keep several eSIM profiles on one phone?
- Does a phone with no SIM tray work?
- Can a smartwatch use one of your plans?
- Can a tablet use your eSIM?