cellt

Switching cell phone carriers

Switching from one US cell carrier to another is mostly a paperwork ritual: get the right account number, get the right port-out PIN, hand them to the new carrier, and wait 15 minutes to 4 hours for the port to complete. Below is everything we have on the topic — interactive tools, deep-dive guides, plain-English glossary, and which carriers we’ve found easiest to switch into.

Start here

  • Interactive 10-step switch checklist — Walks you through every step from "look up your old account number" to "test 911 on the new SIM," with localStorage-backed progress so you can come back to it.
  • Guide: How to switch cell phone carriers — 2,500-word deep dive on what happens behind the scenes during a port, common gotchas, timing expectations, and why you should never cancel your old service before the port completes.

Glossary terms you’ll meet during the port

  • Port-out PIN — The 4–6 digit number your old carrier requires to release your number. Get this from the old carrier before you start the port at the new one.
  • Carrier lock — Phones financed through a carrier are usually locked to that carrier until the financing is paid off. Unlock first, then switch.
  • Unlocked phone — A phone that accepts SIMs from any carrier. The end-state of a successful unlock + switch.
  • SIM swap — In the legitimate sense, replacing a physical SIM with a new one (e.g. when porting). Also a fraud term — carriers tightened defenses around it.
  • BYOD — Bringing your own device to a new carrier. The new carrier provides a SIM/eSIM; you keep your existing phone.
  • eSIM — Modern phones provision the new line as an embedded SIM, often within minutes. No physical SIM swap needed.
  • eSIM Quick Transfer — iPhone-only feature that copies an active eSIM line from an old phone to a new one without involving the carrier.

Carriers we’ve found easiest to switch into

  • Visible — Verizon-owned MVNO with eSIM-first activation. Port-in usually completes within an hour. App-only support, no retail trips.
  • Mint Mobile — T-Mobile-owned MVNO with web/app activation. Annual plan lock-in is real, but the port itself is straightforward.
  • US Mobile — Build-your-own pricing with eSIM. The configurator can be confusing for first-timers, but support is responsive.
  • Cricket Wireless — AT&T-owned with strong retail presence. Walk into a Cricket or AT&T store and they’ll handle the port in person.
  • Consumer Cellular — Senior-friendly with US-based phone support. Phone the support line and they’ll walk through the port step-by-step.

Picks if you’re still deciding which carrier