SIMs, ranked

Your phone is your map, your bank, your translator and your boarding pass, so getting a working local number fast is the single most useful thing you can do in your first week abroad. The good news: it's cheaper and easier than ever. The bad news: the options are confusing, and roaming on a Canadian plan can quietly cost a fortune. Here's how Smith exchange students handle it, and our current ranking of approaches.

First: is your phone unlocked?

Before anything else, check that your phone is carrier-unlocked. In Canada, carriers have been required to sell phones unlocked and unlock existing phones for free since 2017, but older devices or plans may still be locked. If it's locked, a foreign SIM simply won't work. Call your carrier before you leave and confirm. Also check whether your phone supports eSIM; most recent iPhones and many Android flagships do, and that opens up the easiest options below.

The ranking

1. Travel eSIM for days 1–3, then a local prepaid plan

This is our top pick for almost every partner school. Before you fly, buy a short travel eSIM from a provider such as Airalo, Holafly or Nomad. You install it at home, switch it on when you land, and you have data from the airport onwards without hunting for a SIM shop while jet-lagged. Then, once you've settled in, buy a local prepaid plan, which is almost always much cheaper per gigabyte for a whole semester. You get convenience on arrival and the best price long term.

2. Local prepaid SIM from day one

If you're confident and on a tight budget, go straight to a local prepaid plan. In France, Free Mobile is famous for very cheap plans with large data allowances, and Bouygues, SFR (and its online brand RED) and Orange (and its brand Sosh) all offer no-commitment plans. In Portugal, the main operators are MEO, NOS and Vodafone, each with prepaid and youth options. In Germany, discounters such as Aldi Talk and Lidl Connect run on major networks and are very popular with students, alongside Telekom, Vodafone and O2. Singapore's main carriers, Singtel, StarHub, M1 and Simba, plus digital brands like GOMO, sell prepaid tourist and local plans, often available right at Changi airport.

One catch: many countries require ID registration for prepaid SIMs. Bring your passport to the shop, and in some places expect to give a local address.

3. Canadian roaming add-on

Canadian carriers offer daily roaming passes and travel packs. They're the most convenient option because nothing changes on your phone, but over a four-month semester they get very expensive. Use roaming only as an emergency backup or for a weekend before your new SIM arrives.

4. Wi-Fi only

Technically possible, practically miserable. You'll need data for maps, transit apps, two-factor codes and group chats the moment you leave your apartment. We don't recommend it.

Don't lose your Canadian number

Many banks and services send two-factor codes by SMS to your Canadian number. If you swap SIMs, you might not get them. Options: keep your Canadian line on a cheap 'suspend' or minimum plan, switch your bank's two-factor method to an authenticator app before you leave, or (if your phone supports dual SIM) keep your Canadian SIM as the second line. Sort this out at home, not in a French phone shop.

Data tips for your semester

Download offline maps for your city and anywhere you'll travel. In the EU, roaming rules ('roam like at home') mean an EU SIM generally works in other EU countries at no extra charge within fair-use limits, which makes weekend trips easy if your plan is from an EU carrier. Check your plan's fair-use rules, especially for cheap plans. Switzerland and the UK are not covered by EU roaming regulation, so check before a Geneva or London trip.

For inbound students coming to Kingston

Canada's mobile plans are among the more expensive in the world, so shop around. Discount brands like Public Mobile, Lucky Mobile, Chatr and Freedom Mobile, and flanker brands like Fido, Koodo and Virgin Plus, are generally cheaper than the big three (Rogers, Bell, Telus). Online-only brands often have the best price-to-data ratio. A month-to-month prepaid plan avoids credit checks and long contracts.

The bottom line

Travel eSIM to land, local prepaid to live, and protect your Canadian number before you leave. Every school guide on Exchange Hub has a SIM module with picks specific to that country, each tagged to the student who tested it. Prices and plans change constantly, so treat specific brand names as a starting point and compare current offers before you buy.