Mobile Phone Plans: How to Compare Prices Without the BYOD Trap

Mobile phone plan comparison sounds simple. Pick the cheapest per-line price. Then you switch and discover the BYOD trap: the new carrier won't honor the trade-in promo because your phone is already paid off. Here's how to compare honestly.

The Per-Line Price Is Half the Story

Big-three carriers (Verizon, AT&T, T-Mobile) anchor their pricing around device subsidies. The "free" iPhone needs a 36-month line at $90/month. Bring your own device and the same line drops to $50-$60. The $30+ delta is the device tax.

Compare on Five Variables, Not One

Run any plan against:

• Per-line cost (BYOD): The clean monthly rate.
• Device subsidy value: Only counts if you'd buy that exact phone.
• Hotspot data: Critical if you work remotely.
• International: Roaming charges or included countries.
• Free perks: Netflix, Apple TV+, Walmart+ that you'd actually use.

The MVNO Math

1. Mint Mobile: Annual prepay drops to $15-$30/line.
2. Visible (by Verizon): $25-$45 unlimited, no contract.
3. US Mobile: Pick your network, custom plans from $10.
4. Cricket / Metro: Big-three networks at half the price.

For a household of four, MVNOs save $700-$1,400/year vs the big three on BYOD plans.

When BYOD Is Actually a Trap

BYOD only wins if your phone is unlocked, paid off, and compatible with the new carrier's bands. If you're still financing, switching mid-payment can leave you owing the full balance and losing the trade-in offer. Wait until the device is fully paid off, then switch.

Conclusion

A real mobile phone plan comparison stacks BYOD per-line cost against device-subsidy plans on the same five variables. MVNOs almost always win on pure rate. Just check your phone is fully paid off before you make the move.