Do You Need to Register a Travel eSIM? Rules by Country (2026)
Which countries make you register a SIM with a passport or IMEI, why a roaming travel eSIM usually skips that step, and where the rules are still changing.
Usually not. A travel eSIM is a foreign line that roams on local networks, so the passport, ID or IMEI registration that many countries require applies to local SIM cards, not to a roaming eSIM. A few countries have rules that touch visitors' phones or are still changing, so check Mexico, Egypt and Indonesia before a long stay.
This page collects what our destination guides say about registration, country by country. It is a practical summary for travellers, not legal advice, and rules change: where a guide hedges, so does this page.
The short version by country
| Country | What a local SIM needs | What it means with a travel eSIM |
|---|---|---|
| Thailand | Passport registration at the tourist SIM counter | No counter and no registration step |
| Vietnam | Registration against your passport before the SIM works | No counter step |
| China | Passport and a visit to an operator store | No store visit |
| South Korea | Real-name identity verification with a passport | No form to fill in |
| India | Passport, visa, photo, an Indian address and a verification step | No paperwork |
| Philippines | Registration under the SIM Registration Act: passport, local address, onward ticket | No registration counter |
| Brazil | Registration to a person, usually with a CPF | No CPF needed |
| Indonesia | Phones on local SIMs are registered by IMEI | Roaming phones are generally not affected |
| Mexico | Since January 2026, lines registered to their holder | Rules for roaming lines were still being defined |
| Egypt | Phones brought in from abroad are registered, with customs fees on many | Tourists have a 90-day exemption; roaming lines are not charged |
| Cuba | A Cubacel line with your passport at ETECSA | No office visit |
Why a travel eSIM usually skips registration
Registration laws are written for local subscribers: people who buy a SIM from a local operator and get a local number. A travel eSIM works differently. You buy it before the trip, install it at home on Wi-Fi, and when you land it connects to a local network as a roaming line. You never become a local subscriber, so there is no local registration step and nothing to show at a counter.
That is also why the plan's validity starts on its first connection at the destination, not at purchase: the line only comes alive when it meets a local network. See how to install an eSIM on iPhone and Android for the setup itself.
The local registration rules still matter if you later switch to a local SIM, need a local phone number for an app or a bank, or stay long enough to fall under a residents' regime.
Countries worth checking first
Mexico
Since January 2026 Mexico has required Mexican mobile lines to be registered to their holder, with a CURP for residents or a passport for foreigners, and new local SIMs must be registered before they work. A travel eSIM is a foreign line that roams on Mexican networks rather than a Mexican number, and at the time of writing the rules for roaming lines were still being defined. If you are unsure how this affects your trip, ask support before you buy. More in the Mexico eSIM guide.
Egypt
Since 2025 Egypt has registered mobile phones brought in from abroad and charges customs fees on many of them. According to official announcements, tourists' phones have a 90-day exemption from arrival, and phones used with a foreign SIM on roaming are not subject to the fee. The rules have changed several times, so check the current position before a long stay. More in the Egypt eSIM guide.
Indonesia
Indonesia requires phones used on local Indonesian SIM cards to be registered by IMEI. Visitors who buy a local SIM are generally given a temporary access period of up to 90 days, and longer stays need registration with customs. Phones on international roaming are generally not affected. If you plan to stay longer than three months or switch to a local SIM, check the current customs guidance. More in the Bali and Indonesia eSIM guide.
Where you still need your passport
Some services verify your identity separately from the SIM, whichever way you connect:
- China: high-speed rail tickets are tied to your passport, which you scan at the gate, and payment apps such as Alipay or WeChat Pay need registering before you rely on them. See the China eSIM guide.
- India: foreign visitors can register for the railway booking app with an international number and email, but the verification steps change, so set the account up well before you need a ticket. See the India eSIM guide.
- The Philippines: tourist SIMs are typically limited to 30 days unless you show a visa extension, which matters only if you decide to buy one. See the Philippines eSIM guide.
How to stay online and within the rules
- Install the eSIM at home on Wi-Fi, before the trip. Nothing starts counting until it connects at the destination.
- Read the guide for your destination if it is one of the countries above: it says what is still changing.
- Planning a long stay? Check the customs and ID rules before you pass three months, especially in Indonesia and Egypt.
- Need a local number for a bank or a delivery app? That is the case for a registered local SIM.
- Unsure about your trip? Ask support before you buy, not at the airport.
FAQ
Do I need to show my passport to use a travel eSIM?
No. Buying and installing a travel eSIM from AirOva needs an email address and a payment method; there is no passport step. Passport registration in the countries above applies to local SIM cards bought at a counter.
Does SIM registration apply to roaming eSIMs?
The registration rules our guides cover in the Philippines, India, South Korea, Vietnam and Brazil are written for local SIM cards. A travel eSIM is a foreign roaming line, so there is no local registration step. Mexico is the one to watch, where the rules for roaming lines were still being defined in 2026.
What about the IMEI rules in Indonesia and Egypt?
Both target phones used with local SIMs. In Indonesia, phones on international roaming are generally not affected. In Egypt, tourists' phones have a 90-day exemption and phones on a foreign roaming SIM are not charged, but the rules have changed several times, so check before a long stay.
Can I get a local phone number with a travel eSIM?
AirOva's data plans are data-only, and your home SIM keeps your own number for calls and texts. If an app or a bank needs a local number, a registered local SIM is the usual route.
Do the rules change often?
Yes. Mexico's registration started in 2026 and Egypt's phone rules have changed several times since 2025. Our destination guides date their facts and hedge where sources disagree; check them, or ask support, close to your trip.
