If you are leaving Taiwan for school in the United States or Canada, the suitcase can wait. The phone connection is worth sorting out early. Picture landing in Toronto after a flight of more than ten hours, then transferring from the airport to the dorm. The move-in notice from the school, the pickup contact, and the rental address are all on the phone. When airport Wi-Fi is the only thing that works, just finding the shuttle and reaching the landlord can take a long time.
For exchange students, language-school students, or anyone leaving home for university for the first time, the first 2 weeks after arrival are usually packed: school check-in, picking up a student ID, moving into the dorm, buying everyday supplies, confirming the class schedule, and maybe booking a bank visit or applying for a local number. An eSIM that gets you online locally makes that settling-in stretch easier. Once daily life is in place, you can compare local monthly plans, prepaid, and student discounts without making a rushed choice at the airport.
What follows is built from situations students leaving Taiwan actually run into: getting online in the first days in the US or Canada, dual-SIM settings so text messages still arrive, how to choose a local phone number, and data planning for 7, 15, and 30 days.
1. Studying abroad is not a short trip: set up the first month first
A trip might only need maps, a restaurant booking, and photo uploads. The first month of school asks for more. At the airport you may need to open the school’s pickup form. Dorm check-in needs email. The course-registration system needs a login check. Messaging apps are how you meet a roommate. Navigation stays on almost all day while you buy supplies, open a bank account, or compare plans at a carrier store.
That does not mean you should buy a full year of roaming eSIM before you land. If the stay is a whole semester or several years, a local monthly plan, a prepaid plan, or a student rate is usually worth a careful look, especially if you need a local phone number, use a laptop hotspot often, or stay online for long stretches.
A more practical split is two stages. Stage one is a short-term eSIM for landing and settling in. Stage two is deciding whether to move to a local number after you have checked coverage at school, at home, and on the routes you actually use. Exchange students who stay about a month can also compare the total cost of a short-term eSIM and a local prepaid plan directly.
| Study situation | Stage-one suggestion | After you settle |
|---|---|---|
| A short language course of 2–4 weeks | Buy a data-only or number-included eSIM for the number of days | A long monthly plan is not always needed |
| A 1-semester exchange | Have 7–30 days of data ready | Ask about local prepaid or student plans |
| A degree program of 1 year or more | Have data on arrival, and keep the Taiwan number for OTPs | Apply for a suitable local number and watch renewals |
| Moving between the United States and Canada | Compare plans that cover both countries | Watch cross-border high-speed allowances and calling features |
2. Do you need an SSN to get a phone plan for school in the US?
A lot of people look this up before the flight, see the US SSN (Social Security Number), and assume that without an SSN they cannot open a bank account or get a phone number. It is not that simple.
For F-1 and similar student status, an SSN is closely tied to permission to work legally. If you do not have the required work authorization, you generally will not get an SSN just because you want a phone plan. The US Social Security Administration also explains that a person who entered legally and has no SSN may still get some services with other identity documents. Each bank and each carrier has its own application rules.
On the phone side, prepaid and postpaid plans that need a credit check are not the same thing. Some prepaid plans can be activated after a phone-compatibility check, a payment method, and identity details, and they do not always ask for an SSN. Rules still differ by carrier, by plan, and even between the website and the store. If you will stay in the US for a long time, check the official sites of AT&T, T-Mobile, or Verizon for coverage in the city where you will live, then see whether that plan accepts a passport, an international credit card, or other documents.
Opening a bank account works the same way. Ask the bank which identity documents, student papers, address details, and tax information it actually needs. Some banks accept eligible foreigners who do not have an SSN. Not every bank uses the same process. Starting from the idea that a student must have an SSN first is an easy way to make a wasted trip.
3. Studying in Canada: don’t mix up a SIN, a bank account, and a phone plan
Canada’s SIN (Social Insurance Number) also shows up on new-student checklists. A SIN is mainly for work, taxes, and government services. International students who qualify and plan to work on or off campus usually need to apply for a SIN under the rules. Whether you can work still depends on the study-permit conditions.
For banks, the Financial Consumer Agency of Canada explains that someone who is not a Canadian citizen may still open a personal bank account if they meet the identity-check requirements. Some applications have to be done in person at a branch. A specific product, interest and tax reporting, or another service at a given bank may ask for more documents, so it helps to confirm in advance whether a passport, study permit, admission or enrollment papers, and a housing address are enough.
Canadian phone plans also come as prepaid, monthly, and data-first options. Toronto, Vancouver, Montreal, and smaller college towns can suit different carriers and prices. If you will live in a dorm, ask students a year ahead which carrier is better in classrooms, in the dorm, and on the bus routes you will ride. A national ad that only says 5G coverage is a weak reason to lock in a whole semester.
4. A data-only eSIM and a local phone number are not the same thing
The easiest thing to miss when you buy an eSIM before leaving is the idea that being online means you have a local phone number. An eSIM is the way the SIM is installed. What you can actually use still depends on the plan.
A data-only eSIM fits Google Maps, email, LINE, WhatsApp, FaceTime, translation, and ordinary web pages. It does not necessarily include a US or Canadian number, and it cannot directly receive verification codes from local services by traditional SMS. A call on LINE is an internet call. That is a different feature from a carrier voice number.
A plan with a US +1 number fits people who want to give a local number to a landlord, a pickup contact, or a shop in the first days after landing. Having a US phone number still does not mean every bank, ride-hailing platform, or verification service will accept it. Some platforms have their own rules about where a number comes from, SMS short codes, and risk checks.
This matters especially for school in Canada. If the North America eSIM you buy includes a US +1 number, do not treat it as a Canadian local number. +1 is the shared country code for North America, and Canada uses +1 as well, but number ownership and service terms are still different. Some Canadian services may require a Canadian number. If the school, the bank, or the rental service needs a Canadian number, apply for a suitable local plan after you arrive.
5. Don’t suspend the Taiwan number yet: dual-SIM settings for bank OTPs
One of the most common snags abroad is logging into a Taiwan bank app, paying by card, or changing account details, and suddenly being asked for an SMS code. If the Taiwan number is suspended before departure, or the original SIM is put away, the code may never arrive.
On a phone that supports dual SIM and dual standby, split the two lines: keep calls and SMS on the original Taiwan number, and use the US/Canada eSIM only for mobile data. The phone still receives the notices you need on the Taiwan number you already know, and everyday browsing does not have to go through expensive data roaming on the Taiwan line.
How to set it up on iPhone
- Before you leave, open Settings → General → About and confirm there is no incompatible carrier lock. Also check which eSIM and dual-SIM combinations the device supports.
- On stable Wi-Fi, add the eSIM from the JEKO order email. See whether the plan starts counting at installation or after it connects to a local network, then choose when to install it.
- Go to Settings → Cellular and rename the two lines so they are easy to tell apart, for example “Taiwan number” and “US/Canada data”.
- After you arrive, choose the US/Canada eSIM under Cellular Data, and turn off Allow Cellular Data Switching if you need to, so the phone does not switch data back to the Taiwan line on its own.
- Leave the Taiwan number on. Whether to turn off data roaming on that line depends on the original carrier’s rules and the phone settings. If the travel eSIM asks you to turn data roaming on, turn it on only for that eSIM line.
- In a place where it is safe and phones are allowed, test the network and the text messages that actually arrive, and confirm the original Taiwan carrier’s overseas voice and SMS rates.
On Android, Pixel, and Samsung
Menu names differ a little by brand, but the idea is the same. Open SIM management or mobile-network settings, keep the Taiwan line as the default for calls and SMS, and assign mobile data to the US/Canada eSIM. On Pixel, manage this in Settings → Network & internet → SIMs. On Samsung, it is usually Settings → Connections → SIM manager.
Not every Android phone can turn on two eSIMs at once, and whether a physical SIM and an eSIM can run together also depends on the model and the carrier. Checking before you leave is much safer than figuring it out in an unfamiliar airport.
Can Wi-Fi calling replace roaming abroad?
Some Taiwan carrier numbers support Wi-Fi Calling. Whether it can be turned on overseas, whether it supports receiving calls or sending certain messages, and how it is billed should follow the original carrier’s notice. Do not treat Wi-Fi calling as a guarantee that every OTP will arrive. Even with both lines on, a bank may switch to an app notification, device binding, or another check. Logging into the bank app, setting a backup verification method, and updating contact details before you leave is the steadier order.
6. What to handle in the first week
7 days before you leave: download the files first
Keep your passport, admission papers, visa or study-permit documents, housing address, pickup contact, and the phone number for the school’s international-student office in an offline folder on the phone. Install offline maps, and make sure the important files open with no connection. Keep the eSIM order QR code, the manual install details, and the support contact as well.
If you need OTPs from a Taiwan bank, first confirm that the original number can still use SMS abroad, that the bill is paid, and that service can be registered where you are going. If the phone has only one usable eSIM, or a regional model limits it, confirm the dual-SIM combination before you go.
The day you land: reach people first, then the rest
After you clear arrival and reach an area where phones are allowed, switch mobile data to the US/Canada eSIM and finish activation as the product notes describe. Open maps, email, and a messaging app, and confirm you can see the pickup details. Do not send a passport, bank login, or verification code over a public network.
Then confirm how you will get to the dorm or the short-term rental. Comparing a pile of local carriers at the airport is less useful than getting there, resting a little, and then making a choice that will affect the next several months.
Days 2–7: watch the places you actually go
While you handle school check-in, the student ID, and the other life admin, note the network in three places: the dorm, the main classrooms, and the commute. If dorm Wi-Fi is stable, mobile-data use may stay quite limited. If you live off campus and often join remote meetings from the library, the need for speed and hotspot is different.
Over these days, compare prepaid, postpaid, contract length, how to cancel, and student discounts on local carrier sites, and ask whether a local credit history or specific documents are required. Before you switch to a local number, check which services are already tied to the number on the current eSIM, so important notices do not stop after the swap.
Days 8–30: connect short-term data to a longer stay
After you decide on a local number, test that the new SIM can make calls, receive SMS, and use data, then deal with the travel eSIM. If the short-term eSIM’s number was used to register a rental or a bank service, update the account. For a long degree program, whether keeping the original Taiwan number is worth it also depends on the minimum monthly fee, the cost of using it overseas, and how convenient it will be when you return to Taiwan.
7. How much data for 7, 15, or 30 days?
What actually changes usage is not the label “study abroad”. It is whether there is stable Wi-Fi, how long the daily ride is, whether the phone connection is shared with a laptop, and whether video classes stay on.
| How you use it | High-speed data to estimate first | A reminder |
|---|---|---|
| Dorm and campus Wi-Fi most of the time | About 0.5–1GB a day | Maps, messages, web pages, and the occasional file upload |
| Out often, streaming, and more video social apps | About 1–3GB a day | Video quality changes the total a lot |
| Hotspot to a laptop, and long video calls | Estimate several extra GB a day | Test on the course platform at the quality you will use, and check the hotspot policy first |
Those figures are conservative examples for planning, not a promised amount of use. Video calls, syncing assignments, automatic cloud-photo backup, or a system update can make usage jump. On a total-data plan, check the phone’s mobile-data stats for the past week. On a daily plan, watch whether the speed drops after the high-speed allowance is used, and what time it resets.
If you want to share the phone connection with a laptop in the US, a product page that says unlimited does not mean the hotspot is unlimited. Some plans limit hotspot, device type, or how much high-speed data can be shared. Students who will join online classes or upload a lot of class video should use trusted campus or dorm Wi-Fi first, and keep the eSIM for getting around and as a temporary backup.
8. How to choose a JEKO eSIM for the US and Canada
If the goal is simply to get online as soon as you arrive in the US or Canada, a data-only plan is often enough for navigation, email, school check-in, and staying in touch. JEKO’s US daily plans include Verizon and AT&T options. The product page describes them as roaming data lines with a US IP, with a different high-speed allowance each day, and they do not come with a US phone number. They are not a fit for receiving ordinary local US text messages.
If you need to give out a local +1 number as soon as you land in the US, you can also compare JEKO’s AT&T native US eSIM. The site lists 10–30 day plans with data, calls, and SMS, for use in designated areas of the United States, Canada, and Mexico. In Canada, the high-speed allowance is 25GB for the whole plan. The supplier does not state the speed after that 25GB is used. This is a US number used across borders. It is not a native Canadian number.
The activation date on this AT&T plan is counted in US Pacific Time, and the site asks you to order at least 2 days ahead. It also has specific compatibility and use limits for Android and for hotspot. When you use it in Canada, turn on eSIM data roaming as the product notes say. Hotspot sharing is not supported on this plan in the United States, Canada, or Mexico. If you will live in Canada for a full semester and need to share data with a laptop, or you need a large amount of high-speed data, compare JEKO’s Canada plans and local Canadian carriers first. There is no need to give up what you actually need just to hold a US number.
| What you need | Compare first |
|---|---|
| A short US exchange, and you only need maps and school email | US data-only daily or total-data plans |
| Just landed in the US, and you want a +1 number for shops | An AT&T plan that clearly includes a number, calls, and SMS |
| School in Canada, with frequent video classes or hotspot sharing | A Canada high-speed or unlimited plan, or a local monthly plan |
| Traveling between the United States and Canada | A plan that clearly covers both countries, and check each country’s high-speed allowance |
| Staying longer than one semester | A short-term eSIM as a bridge, plus the total cost of a local long-term plan |
See the plans: JEKO US eSIM plan list｜JEKO North America AT&T native-number eSIM｜All JEKO eSIM plans (Canada can be filtered)
On price, the “from NT$” shown on different product pages is usually the lowest option in that series. It is not the 30-day price. After you pick the dates, the data amount, and whether you need a phone number, compare the tax-included total and whether it can be extended. That is how a wrong purchase is easier to avoid. The return and exchange rules on JEKO native plans may also be stricter than on a regular roaming eSIM that has not been activated. They are worth one more look before you pay.
9. Campus Wi-Fi is already there. Do you still need an eSIM?
Campus Wi-Fi is convenient, but it does not come with you from the airport to the dorm, and it does not necessarily cover every street near where you live. Campus access may ask for a username and password, device registration, or two-step verification first. The dorm may not share the network details until the night you move in.
A short-term eSIM is often useful exactly in those gaps. The first supermarket run for a comforter, the bus while you look for the teaching building, a last-minute notice from the school: a phone with data makes those much easier. Once campus Wi-Fi and dorm Wi-Fi both work, and your routes are steady, then decide whether a high mobile-data bill is still worth paying every month. An eSIM does not stand in for every campus Wi-Fi network.
Set a secure verification method ahead of time for the school mailbox, the student portal, the bank, and other important accounts. Try not to send sensitive details on public Wi-Fi. Use the school’s official login page, and use the campus VPN when the IT office says to. An eSIM mainly provides a mobile connection. It does not replace password management, identity checks, or other security steps.
10. Common questions FAQ
I only have a Taiwan phone number. Can I sign up for Uber in the US first?
Some platforms let you register with an international number, but the number format they accept and the verification method can change. Install the app and finish account verification in Taiwan first. If you need a local US number, then compare plans that include a +1 number. Do not assume a data-only eSIM has traditional SMS.
If I keep the Taiwan SIM, will the roaming bill be huge?
If the original number is used overseas, voice, SMS, or other roaming charges can still apply. Pointing mobile data at the overseas eSIM, and turning off data roaming on the Taiwan line when you do not need it, lowers the chance of using it by mistake. That does not mean every service is free. Ask the original carrier about SMS and incoming-call rates before you leave.
Can a US eSIM and a Canada eSIM be used in both places?
Not necessarily. A single-country plan and a multi-country North America plan cover different areas. Even when both can be used, Canada may have its own high-speed cap and hotspot limits. Read the product specs before you cross a border, especially the high-speed amount, the IP exit, the local number, and where activation happens.
The exchange is only 21 days. Can I just buy 30 days?
You can compare them, but it is not always the better deal. See whether a length that fits 21 days is available, and whether the 30-day option really matches how much data you use. If the validity period starts early, the extra days can go unused.
If I buy a US eSIM, will Taiwan bank OTPs arrive?
The data function on a US eSIM does not automatically receive text messages sent to the Taiwan number. A Taiwan OTP still depends on whether the original Taiwan number stays on, whether roaming works on it, and which verification method the bank uses. Test it and set up a backup before you leave.
Can a student in the US without an SSN really get a prepaid phone plan?
Some prepaid plans do not use an SSN for a credit check, but conditions differ by carrier, payment method, and where you apply. Without an SSN, start with the official prepaid plans and ask store support which documents they need. You do not have to look only at a long postpaid contract at the start.
Can I open a Canadian bank account without a SIN?
Official Canadian guidance gives non-citizens a way to apply for a bank account with suitable identity documents, but bank products and required tax information can differ. Book the bank and confirm the documents first. If you will work, apply for a SIN according to your own status and work eligibility.
For a long degree, is a full year of travel eSIM the cheaper choice?
Not necessarily. The full-year cost, how easy it is to extend, a local number, coverage, and hotspot needs all count. A travel eSIM fits the transition. After you have settled, comparing local student plans is usually an easier way to find a long-term fit.
Get online on day one, and the rest of student life is easier to arrange
The first days in the United States or Canada already have enough to handle. The phone connection does not have to wait until the last moment. First get the phone receiving school notices, finding housing, and reaching family and friends. Use the first week to learn the local setup, then pick a carrier plan you can actually live with for a semester.
For a short exchange or language school, an eSIM with flexible days can save a lot of time on applications. For a long degree, it fits well as a bridge for the first days after landing. Whether to keep the Taiwan number, when to apply for a local number, and whether OTPs will arrive can follow your own bank and daily needs. Those do not all have to be finished on the day you enter the country.
If you are packing now, start at JEKO eSIM and filter by the United States or Canada for days and data. Sort the connection out early, and once you land you can give your attention to the new school, new friends, and the life ahead.
