Why prepaid is the snowbird door, and how the three carriers differ
The structural fact of US mobile service is that POSTPAID accounts, the ones with device financing and family discounts, want a credit file and an SSN, two things a Canadian visitor does not carry. The PREPAID brands of the same three carriers drop both demands: you pay the month, you get the service, you stop paying when you fly home. Same towers, same coverage maps, simpler paperwork. That single design choice makes the prepaid aisle the default for a six-month Canadian, and the only real questions left are network fit for YOUR address and the data tier you actually use.
The three networks differentiate less on price than on coverage geometry. T-Mobile's prepaid arm is typically the price-aggressive one and its urban-coastal coverage suits most snowbird corridors; AT&T's prepaid (and its Cricket MVNO) trades a few dollars for a footprint that travels better inland; Verizon's prepaid (and Visible) carries the premium-network reputation with autopay discounts that close most of the price gap. All three sell eSIM activation, which is the snowbird's quiet superpower: the Canadian SIM stays active for banking texts while the US line carries the season's data.
Typical range: June 11, 2026 storefront reading: entry prepaid tiers cluster near 25 to 40 USD per month, unlimited-data tiers near 50 to 60 USD before autopay discounts; MVNO brands undercut by 10 to 20 USD at the cost of deprioritized speeds at congestion. Every figure moves monthly with promotions: the carrier page on purchase day is the binding grid.
Opinion: buy the network, not the logo: run each carrier's coverage map on your actual Florida address and your travel corridor before comparing a dollar of price. A cheap plan on the wrong network is the most expensive option in a stucco condo.
Who does NOT need this page
A two-week visitor lives comfortably on Canadian roaming day passes; the arithmetic only favours a US SIM past roughly a month of cumulative stay. And if your decision is still « roam, US prepaid, or dual-eSIM mix », start with the companion strategy guide linked above: this page assumes the US-prepaid choice is made.
The frame, level by level
| Aspect | Federal US | State (FL) | Federal CA (for contrast) |
|---|---|---|---|
| Who regulates carriers | FCC licenses spectrum and carriers nationally | No state licensing of carriers; Florida adds communications taxes to bills | CRTC regulates Canadian carriers; its Wireless Code caps roaming overage at 100 CAD per month per account |
| ID required to buy | Prepaid: none beyond payment; postpaid: SSN/credit file | Same | Canadian carriers know you; the issue only exists on the US side |
| Taxes on the bill | Federal USF charges on some plans | Florida communications services tax applies to service billed in-state; prepaid tiers often quote tax-inclusive prices | GST/HST/QST at home |
A worked example: equipping a Largo couple, November to April, 2026 prices
Diane and Marc arrive November 1 with dual-eSIM phones. Each buys a mid-tier prepaid eSIM online (June 2026 storefront range: about 40 USD per month each with autopay), keeps the Canadian number alive on the home carrier's cheapest hold option for banking texts, and turns off Canadian data roaming. Season cost for two lines, six months: roughly 480 USD at the dated range, versus a daily-roaming alternative that would cross 2,000 USD for the same period at 15-20 CAD per active day, the arithmetic that the strategy guide develops. At the Bank of Canada rate of 1.3930 (published June 10, 2026), the prepaid season is about 669 CAD for the pair. Typical range: all figures are June 2026 storefront levels; promotions shift them monthly.
Common mistakes
- Buying on price before checking the coverage map at your address. The three networks age differently inside buildings and away from the coast.
- Letting the Canadian SIM lapse. Banks send verification texts to the Canadian number; keep it alive on a minimal hold plan.
- Assuming « unlimited » means hotspot. Hotspot allowances are tiered separately; read the line item if the condo has no internet.
- Forgetting autopay conditions. The advertised price often assumes autopay enrolment; without it the bill runs 5 to 10 USD higher.
- Buying a physical SIM when the phone is eSIM-capable. The eSIM path activates in minutes and keeps the Canadian line in place.
The prepaid-purchase checklist
- Decide the strategy first (companion guide): roam, US prepaid, or mix.
- Run all three coverage maps on your Florida address and travel corridor.
- Pick the data tier from last winter's real usage, not optimism.
- Choose eSIM if the phone allows; keep the Canadian SIM active on hold.
- Enrol autopay for the advertised price; diarize cancellation for departure.
- Confirm hotspot allowance if the condo lacks internet.
Frequently asked questions
Can a Canadian buy a US prepaid plan without an SSN?
Yes: the prepaid brands of all three national carriers sell without SSN or credit check, per their storefronts consulted June 11, 2026.
Which of the three is best for snowbirds?
The one whose network is strongest at YOUR address: run the coverage maps. Prices differ by a few dollars; networks differ by neighbourhood.
Do I keep my Canadian number?
Yes, on a dual-SIM/eSIM phone: Canadian line on hold for texts, US line for data and local calls. The strategy guide details the hold options.
Are this page's prices guaranteed?
No: they are dated June 2026 ranges from the carriers' own pages, which change monthly. The storefront on purchase day is the only binding grid.