Keep Your Canadian Number, Move Your Data to an eSIM | Dual-SIM Setup Guide

Last updated: August 16, 2026

Once you're settled in Canada, a local phone number tends to become part of everyday life: bank logins, ride-hailing apps, messages from work or school. What feels less reasonable is paying every month for a large data allowance when the number itself is the part you actually need. Keeping the number on a small local voice-and-text plan and moving your day-to-day data to an eSIM lets you balance cost and convenience without giving anything up. This guide covers what to check before you start, how to set both lines up on one phone, and what to look at once everything is running.

What "number on the local plan, data on the eSIM" actually means

In short: your phone holds two lines at once — one whose job is the phone number, and one whose job is data — and you decide which does what. Most eSIM-capable phones can run a physical SIM alongside an eSIM, or several eSIMs together, and let you pick the line used for mobile data from the settings screen.

Set up this way, calls and SMS verification codes sent to your Canadian number arrive exactly as before, while video, maps, and tethering run on the eSIM. Because the number line no longer needs a big data bucket, you can move it to a lighter voice-and-text plan — which helps most if your data use swings a lot from month to month.

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Comparing the three common setups

Here's the big picture first. None of these is objectively "right" — the best fit depends on how long you're staying and how much data you actually use.

Setup	Number line (local plan)	Data	Who it suits
Keep the number, add a data eSIM	Light voice-and-text plan	Data eSIM	Canada is your base. You need the number, but your data use varies month to month
One local plan for everything	Plan with data included	—	You use roughly the same amount every month and want the simplest possible setup
Data eSIM only	—	Data eSIM	A shorter stay with no need for a local number; you mostly call through apps

If you're still deciding which provider to park the number with, it's worth reading our comparison of the cheapest ways to keep a Canadian phone number first, then coming back to the setup steps below. Plans and conditions change, so confirm the final details on each provider's own site.

Three things to check before you start

1. Does your phone support eSIM?

eSIM only works on compatible hardware, and the same model can differ depending on where and how it was sold. It takes a minute to look yours up on our eSIM-compatible device list.

2. Is your phone carrier-unlocked?

If you brought a phone with you from your home country, it may still be locked to the operator that sold it, which can prevent you from adding another line. Ask your home operator to unlock it before you travel — it's much easier to sort out before you leave than after you arrive.

3. Don't cancel or disable the number line

Adding a data eSIM doesn't cancel anything you already have. But if you switch the number line off in your phone's settings and leave it off, calls and SMS won't reach you. If the whole point is keeping the number, leave that line turned on.

Setup: keep the number where it is, move only the data line

The process itself is short. With Bloomy eSIM, you tap the setup link you receive after purchase and the phone walks you through adding the eSIM (a QR code and manual entry are there as backups if the link doesn't work on your device).

1. Install it on Wi-Fi before you travel: tap the setup link and follow the prompts to add the eSIM to your phone. Installing isn't always the same as starting the clock on your plan, so check the activation timing shown for the plan you bought.
2. Give each line a name: something like "Canada number" and "Data" makes every later step obvious at a glance.
3. Leave calls and SMS on the number line: your local number stays responsible for outgoing calls and incoming texts. Not changing this is the whole point.
4. Set mobile data to the eSIM: this single setting is what moves your everyday browsing over to the eSIM.
5. Turn the data eSIM on when you land: if it doesn't connect right away, toggling airplane mode or restarting the phone usually sorts it out.

Menu names vary slightly by device and OS version. Our setup guide walks through the actual screens step by step.

What to check once it's set up

Almost every problem people run into comes down to one line being assigned the wrong job. Work down this table in order and you'll catch them early.

Setting	Should be	Easy to get wrong
Mobile data line	Data eSIM	Left on the number line, you may use data you didn't plan to
Voice call line	Local number line	Set to the data line, outgoing calls won't work
Number line on/off	On	Switched off, SMS verification codes never arrive
"Allow mobile data switching"	Off, as a rule	Left on, the phone can quietly fall back to the number line
Data roaming	Check each line separately	It's a per-line setting, so it's easy to change one and forget the other

Who this suits — and who it doesn't

A good fit if you…

• Want to hang on to your Canadian number but feel you're paying for data you don't use
• Have months that look nothing alike (term time versus the holidays, for example)
• Are heading away from Canada for a while and want to keep things light in the meantime
• Do most of your talking on WhatsApp or similar, and mainly need the number for verification codes and official contact

Probably not for you if you…

• Have a phone that doesn't support eSIM and no plans to replace it soon
• Would find juggling two lines more hassle than it's worth (one plan can genuinely be the nicer experience)
• Rely on calls to your number for work and care most about call quality and minutes
• Are only in Canada briefly and won't need a local number at all — a data eSIM on its own is enough

If it won't connect, check in this order

The quickest path is almost always: is the line on → which line has mobile data → roaming settings → restart.

1. Confirm the data eSIM line is switched on.
2. Confirm mobile data is pointed at the data eSIM.
3. Check data roaming, remembering it's set per line.
4. Toggle airplane mode on and off; if nothing changes, restart the phone.
5. If it's only SMS that isn't arriving, check that the number line is on and the plan is still active.

For symptom-by-symptom fixes see our connection troubleshooting page, and for questions about buying or activating, the FAQ. Bear in mind that speed and stability vary with the local network, coverage in your area, and how busy the network is. Underground, in rural areas, or around big events, any line can struggle.

Choosing the data side

The lighter you go on the number line, the more the data plan shapes your day-to-day experience. As a rough guide, maps and messaging get by on modest allowances, while streaming, video calls, and tethering push the number up quickly. Multiplying the length of your stay by a realistic daily estimate is usually enough to land in the right range.

If you're unsure, there's no need to jump straight to the largest plan — start with a shorter one and use what you learn to size the next. You can filter by destination, data amount, and duration on our eSIM comparison page. Pricing (shown in USD) and what's included are updated from time to time, so check the current listing at the moment you buy.

In short: keep the number, split off the data

A Canadian phone number is the key to a lot of everyday admin, which is exactly why it's worth separating "the part that keeps the number" from "the part that carries the data." There are only really two settings that trip people up: which line handles mobile data, and whether the number line is still switched on. Get those right and daily life feels no different from before.

A sensible order for your next step: check whether your phone supports eSIM, decide what you want the number line to look like, and then pick the data allowance to go with it.

This article reflects general information as of August 2026. Provider plans, pricing, and terms can change, and we've avoided stating anything we couldn't verify at the time of writing. Please check each provider's official information along with Bloomy's current listings before signing up or buying.