Minggu pertama adalah yang paling berat: tempat tinggal, pendaftaran, dan panggilan ke rumah.
Jawaban singkat
Bank, aplikasi pemerintah, dan akun yang sudah ada terikat pada nomor asal Anda. Memutusnya sebelum Anda memindahkan verifikasi tersebut dapat mengunci akses Anda saat di luar negeri.
Going abroad to study is different from going on holiday because you do not arrive as a guest — you arrive as someone who has to get established quickly. The first week is when everything lands at once: getting from the airport to your accommodation, moving into halls or signing a lease, registering with the university, opening a bank account, and reporting in to a family waiting in another time zone. Nearly all of it depends on being online.
What makes this stretch hard is that you have nothing local yet: no bank account in that country, no confirmed address, no student account to sign into the university's systems — while several of the things you need to do ask for exactly those. Having your own connection from the minute you land is the one item on that list you can finish before you leave home.
In that first week you will have maps open almost constantly because you do not yet know where anything is. You will video call home more than usual, because your family wants to see that you have arrived and where you are. You will upload documents into university systems several times over, and you will look up basic facts about a new city all day long. Together that makes data use in week one visibly higher than in week four.
By the second or third week the pattern usually settles on its own. You start remembering routes, you learn where there is Wi-Fi, and you find a rhythm for calling home that fits around classes. So plan data in two phases — the heavy settling-in period and the steadier stretch after it — rather than as one flat average across the term.
| First-week task | How it uses data | Can it be prepared in advance? |
|---|---|---|
| Getting from the airport to your accommodation | Maps, ride-hailing, contacting the landlord | Yes — save the address and route offline |
| Moving into halls or signing a lease | Reading documents, sending photos, verifying identity | Partly — keep the documents on the device beforehand |
| Registering with the university | Portal logins, file uploads, two-factor prompts | Yes — move your verification method before flying |
| Opening a local bank account | Appointments, forms, verification codes | Check requirements with the destination bank in advance |
| Keeping in touch with home | Video calls, which use far more than voice | Agree call times across both time zones beforehand |
First-week tasks and what can be arranged ahead
This is the most important step on this page, and the only one you can genuinely do only while still at home. Your bank, your university account and other services you use may send verification codes to your existing number by SMS. If that number does not work once you are abroad, you will be locked out of your own accounts at the exact moment you need them.
Most exchange students end up on a local service eventually, because a term or a year is a long time. But signing up locally usually requires documents you do not have on day one — proof of address, or enrolment paperwork that only arrives after you have settled in. The gap between landing and having those documents is exactly where an eSIM fits.
Documentation requirements for registering a SIM are set by each country's own rules and can change, so we do not list them here. Check the destination country's official sources, or ask the international student office at the university you are going to — they usually have the version that actually matches a student's situation.
The safer plan is to let the eSIM cover a long enough opening stretch, then decide about a long-term service once you are there and can see the real options. Rushing into a long contract in week one, before you know which area you will live in, which campus you will use and how you will travel, is rarely the best decision you will make.
Plenty of universities provide an institutional Wi-Fi network for students, but getting onto it normally requires a student account — something you receive after registration, not on the day you arrive. Until then you are still relying on your own data. The access details belong to each institution, so ask the office that looks after international students.
Accommodation Wi-Fi is similarly unpredictable. Some halls have it ready, some make you sign up separately, and quality varies between buildings. If you will regularly join online classes or video meetings with a supervisor, do not plan around the assumption that the flat's Wi-Fi will hold up — keep your own data as the fallback.
Video calls use significantly more data than voice, and in the first week the people at home usually want to see your face rather than just hear you. What works is agreeing in advance that the long video calls happen when you are on Wi-Fi, with messages or short voice calls at other times. That reassures the family without draining the plan.
The other thing to settle before you fly is timing, since the time difference means the convenient hours rarely line up. Fixing the times in advance cuts down on rounds of missed calls, which waste time and needlessly worry people at home during the week you are busiest settling in.
A realistic estimate starts from what you will actually do, not from a general number someone quoted. For an exchange student the heaviest items are usually video calls home, maps while finding your way, and uploading documents into portals. Online classes become a large variable the moment your course includes them.
| Usage pattern | What to allow for |
|---|---|
| Mostly on the flat's Wi-Fi, not out much | Data as a fallback and for time outdoors, but still allow for a heavy first week |
| Exploring the city daily at the start | Maps open near-continuously, plus searching places |
| Regular video calls home | Schedule long calls on Wi-Fi and keep data spare for urgent ones |
| Online classes or seminars | The biggest variable — ask the course how many sessions before choosing a plan |
| Frequently tethering a laptop | Laptops use more in the background; check the plan permits tethering |
Matching usage patterns to what to allow for
An estimate is a planning aid, not a guarantee of what you will use — habits differ enormously and no two first months look alike. If you are unsure, choose something with room to adjust, check your remaining allowance through the first week, and plan the following month from the real numbers you have seen yourself.
The first month is when you will lean on maps hardest, because every route is new — to campus, to the supermarket, back to your flat at night. Downloading an offline map of the city on day one helps a lot, so you can still follow a route roughly where the signal is poor, such as underground stations or buildings the signal does not reach.
Public transport and ride-hailing apps differ from city to city, and some only work fully once they are linked to a local payment method — something you may not have in week one. Keep more than one option ready, and do not plan your first day's travel around a single app you have never used.
Paying online from abroad often brings extra verification, and transactions are sometimes declined because the bank's systems see spending from an unfamiliar country. The easiest fix is contacting your bank before you travel to ask whether anything needs flagging in advance — the rules differ from bank to bank.
Always have more than one way to pay, because in the first week you may need to cover a deposit or a university fee at the exact moment one card stops working. Sorting out a card problem from abroad takes time and contact with the bank — which comes back to the same requirement: you need a connection that works.
While settling in you may use public Wi-Fi in cafés and campus buildings more than usual. The rule of thumb is not to do anything sensitive on a network you do not know. When it cannot be avoided, use your own data for anything involving money or important accounts and leave public Wi-Fi for ordinary browsing.
Having your own data is therefore more than a convenience — it lets you choose which network handles which task, instead of being forced onto whatever is in front of you. That distinction matters in a period when you are handling documents and money at the same time.
It depends on when you will have the documents a local service asks for, and that varies by country and by university. Many students cover the settling-in stretch until registration is done and they have proof of address. Allowing slightly longer than you expect is usually more comfortable, because first-week paperwork tends to run slower than planned. If unsure, ask the international student office how long the process normally takes.
Many students still do, because banks and other services tie verification to the original number. The best sequence is to move that verification onto an authenticator app before departure, then decide whether to keep the number. How to keep it alive from abroad, and what that costs, is set by your own operator — ask them directly.
Once you have whatever documents that country requires and you know which area you will live in and how you will get around — usually after registration and moving in. Documentation rules belong to each country and can change, so check official sources for the destination or ask the international student office rather than relying only on what previous students remember, since the rules may have moved.
It depends on whether that plan permits tethering, which is stated in the plan's own details — check before buying if you intend to rely on it. Also worth knowing: laptops use far more in the background than phones, between system updates and file sync. Set the connection as metered and turn off automatic updates before you tether.
Check three things in order: that the line you enabled is set as the mobile data line, that data roaming is on for that line, and then cycle aeroplane mode and restart the phone. If it still fails, do not delete the profile — it usually cannot be reinstalled. Find airport Wi-Fi and message us on LINE or by email with your phone model, OS version and exactly what the screen shows.
Any prices and offers that exist are shown on the plan pages themselves. We do not quote figures in articles because they change and differ by plan and destination. If you are planning a period of study and want help comparing options for your dates and country, send the details on LINE or by email and we will compare what is actually available at the time.
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