Observed arrival · 2026-09-11
CarrierMath — the real 36-month cost of switching carriers
A household phone-plan calculator that compares carrier promotions, device costs, trade-in or resale value, fees, and 36-month totals.
Field notes
The tool models a household rather than a single line, combining current phones, device condition, discount eligibility, data needs, and contract preferences before ranking carrier scenarios. Its displayed example compares four lines and separates plan charges from upfront device costs, resale credits, fees, and excluded sales tax. Results include both worst-case and promotional views; some providers remain estimates while activation or provider fees are being confirmed.
Observed signals
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Editorial observations of this landing page, not a rating.
One card from the complete issue