How to switch wireless carriers without losing your number

Switching wireless carriers in 2026 is dramatically easier than it was a decade ago, but the steps have also shifted. eSIM has become the default on most new phones, the FCC rewrote the number-porting rules in late 2023 to add a port-out PIN, and every major carrier now runs aggressive switching bonuses that can cover an entire device payoff if you know how to ask. The upside is real: readers who switch away from a legacy postpaid plan to a competitive MVNO often save $40–$80 per line per month with almost no change in coverage.

The downside is that the process still has sharp edges. A botched port can leave you without a working number for a day or more, iMessage can get stuck on the old carrier and silently eat texts from iPhone friends, and a phone that is not fully paid off or fully unlocked can stall the switch at the worst possible moment — usually late Friday when support is thinnest. This guide walks through the entire process end to end, including the parts the carrier websites leave out.

TL;DR: the 4-step minimum

If you only remember four things, remember these. Everything else in this guide is there to make sure each of the four goes smoothly.

1. Confirm the phone works on the new carrier’s network.Check that your device is unlocked, paid off, and supports the right 5G bands for the new carrier. iPhone 12 and newer, and most Samsung Galaxy S21 and newer, are compatible with all three US networks. Older or carrier-locked phones may not be.
2. Get a port-out PIN from your current carrier.Since late 2023 the FCC requires a PIN on most consumer accounts. Without it, the port will not go through. Retrieve it in the carrier app or by calling the carrier directly — never share it with anyone other than the new carrier’s activation flow.
3. Port the number to the new carrier.Start the activation in the new carrier’s app or in-store, enter your current phone number, account number, and port-out PIN. Most ports finish in 5–30 minutes; a few drag out for hours.
4. Re-register iMessage and RCS on the new line.This single step prevents the most common “my texts are broken” complaint. On iPhone, toggle iMessage off and back on after the port completes. On Android, clear the Messages app’s cache and re-verify your number.

Do that in order, at a time when you can spend an hour on it, and the switch almost always goes smoothly. The rest of this guide is about the context that makes each step hold up.

Before you switch: confirm network compatibility

Every US carrier ultimately runs on one of three networks: Verizon, AT&T, or T-Mobile. If you know which network your new carrier uses, you know whether your current phone will work on it.

The three networks and their MVNOs

Verizon owns its own network and also resells it through Visible, Total by Verizon, and several prepaid brands. AT&T owns its network and resells through Cricket Wireless and numerous prepaid brands.T-Mobile owns its network (absorbed Sprint years ago) and resells through Metro by T-Mobile, Mint Mobile,Ultra Mobile, US Mobile (dual-network), andGoogle Fi (primarily T-Mobile with international roaming).

Switching inside the same network — for example from Verizon postpaid to Visible, or from T-Mobile to Mint — is the easiest move because your phone has been validated on that network already. Jumping networks (Verizon to T-Mobile, for example) is usually fine with modern phones, but older or specialty devices sometimes stumble on which 5G bands are supported.

Band compatibility

In practice, any iPhone 12 or newer bought through a US carrier or Apple since late 2020 works on all three networks. Samsung Galaxy S21 and newer, and Google Pixel 6 and newer, are similarly broadly compatible. Specialty devices such as rugged phones, older Motorolas, and some international variants may miss critical bands — especially Verizon’s C-band (n77) and T-Mobile’s mid-band (n41). Before you switch, look up your phone’s model number on the new carrier’s compatibility checker. Every major carrier has one and it takes under a minute.

Unlock status

A phone bought on a carrier contract is locked to that carrier until specific conditions are met. The rules vary, but the common pattern is 60 days of active service and the device must be fully paid off or nearly so. Postpaid-financed phones are often unlockable sooner than prepaid-purchased ones. Contact your current carrier or check their self-service unlock tool before you switch. Trying to port to a new carrier with a locked phone will activate service fine on the new account — but the phone will keep connecting to the old network, which results in confusing errors.

Device financing

If you are mid-way through a 24- or 36-month device payment plan, three things are true. One, switching does not erase the balance; you still owe the old carrier for the phone. Two, if the phone is locked to that carrier, paying the balance typically unlocks it after a short waiting period. Three, some switching offers from the new carrier explicitly include bill creditsthat repay your old balance over time — we cover those incentives later.

Back up your data

The port itself does not affect your phone’s data, but in the rare case a reset is needed, a full backup spares you pain. On iPhone, verify iCloud backup finished in the last 24 hours. On Android, verify Google One backup and WhatsApp chat backup if you use it. Screenshot anything account-related from the old carrier’s app (final balance, order history, billing PDFs). Once you port, the old carrier may close the account within 24–72 hours and that portal access disappears.

Check coverage at your actual addresses

Coverage maps are marketing, but they are still a reasonable starting point. What matters is not whether the map shows a dark color over your city — it is whether the signal reaches the specific places where you spend your days: your home, your office, your commuting route, the park you walk the dog in, your parents’ house if you visit regularly.

All three US carriers publish coverage maps that distinguish between 5G Ultra Wideband/C-band/mid-band, standard 5G, and LTE-only. Focus on the mid-band 5Glayer: that is the one delivering the real-world 200–600 Mbps speeds that carriers advertise. Basic low-band 5G often performs no better than LTE. If mid-band coverage on the new carrier is thin at your home but strong at your office, expect fast data at work and mediocre data on the couch.

A 14-day trial is the best safety net. T-Mobile, Verizon, and most MVNOs offer a free trial via eSIM: the new carrier provisions a second line on your phone without disturbing the first. You can test speed, call quality, and signal strength in every room of your house before you pull the trigger on the port. Walk your commute with a speed test app running once or twice before you commit. If it fails in real life, cancel the trial and nothing has been lost.

Our own best wireless carriersroundup combines published coverage maps with reader-reported signal data at thousands of ZIPs, which is helpful if the carrier’s own map looks too good to be true.

Port your number: how the 2023+ rules work

Number portability is a federal right in the US — you own your number, not your carrier. That said, carriers used to make porting out painful with long holds, confusing forms, and occasional outright refusal. In response, the FCC tightened the rules in late 2023 and added a mandatory port-out PIN for consumer accounts.

What a port-out PIN is

A port-out PIN is a short numeric code (usually 6–15 digits) that proves to the new carrier that you control the account at the old carrier. It blocks a specific flavor of fraud called SIM swapping, where an attacker contacts your carrier pretending to be you and ports your number to a phone they control. Every major US carrier now requires one before releasing a number to a new carrier.

How to retrieve your PIN

On Verizon, open the My Verizon app, go to Account > Number Transfer PIN, and request a PIN. It is valid for seven days and is sent as a text. On AT&T, log in at att.com, go to Profile > Sign-in Info > Wireless Passcode, and request a number transfer PIN. On T-Mobile, open the T-Mobile app, go to Account > Profile > Line Settings, and tap Get your Number Transfer PIN. In all three cases the PIN is good for seven days. You can also request it by calling the carrier — longer wait, same result.

What else you need

Along with the PIN, the new carrier needs your current account number (shown on your bill; on prepaid sometimes the phone number itself serves as the account number), your billing ZIP code, and your name as it appears on the account. Mismatches on spelling or billing address are the single most common cause of a port rejection. If the port fails, the message usually reads “information did not match carrier of record” and the fix is to check the account number and PIN exactly as the old carrier has them.

How the port process works

When you submit your port request, the new carrier sends an automated message to the old carrier asking them to release the number. The old carrier validates the PIN, account number, and name. If everything matches, the number transfers — most complete in 5–30 minutes, though a quarter of ports take longer and a small number get stuck for hours. During the port window you may lose service briefly. Do not power-cycle the phone during this period; it confuses the activation and occasionally requires a support call to untangle.

eSIM vs physical SIM

In 2026, eSIM is the default on essentially every new phone sold in the US. Apple iPhone 14 and later sold in the US are eSIM-only — there is no physical SIM tray. Google Pixel and Samsung flagships support eSIM alongside a physical tray. Most major carriers, including the big three and the better MVNOs, activate eSIM in minutes through an in-app flow.

Why eSIM is better for switching

eSIM lets you provision a new line without a physical card in the mail. The new carrier’s app or activation flow scans a QR code (or uses eSIM Quick Transfer on iOS 16+) and the line appears on your phone within a minute. Because there is no SIM to wait for, you can complete a switch on the same day you decide. Several carriers now offer eSIM trialplans that run alongside your primary carrier for 7–30 days — a free way to test coverage without committing.

Transferring an eSIM between phones

If you are also replacing your phone, eSIM Quick Transfer on iPhone moves the line from the old device to the new one in under a minute, no carrier contact needed. On Android, the process is less unified — the flow varies by OEM and sometimes still requires the carrier to issue a new QR code. Plan for that if you are jumping Android devices and wireless carriers at the same time.

When physical SIM still matters

Some older phones and some prepaid MVNOs still use physical SIM cards exclusively. If you travel abroad often and rely on local physical SIMs for international data, note that iPhone 14+ US models physically cannot accept them — you must use eSIM versions of those local plans, which more and more international carriers now offer but not all. Other travel-heavy users prefer Pixel or Samsung with a physical tray for exactly this reason.

Device financing, trade-ins, and switch bonuses

Leaving a carrier with an active device payment plan is allowed, but the balance does not vanish. Three scenarios are common.

Pay it off

The cleanest path: pay the remaining balance to the old carrier, they unlock the phone after a short processing window (usually 24–72 hours), and you port with a clear device. Useful if your balance is small or you want to avoid owing the old carrier anything ongoing.

Trade-in

Most carriers offer aggressive trade-in credits for switchers, especially if you bring an eligible recent-model iPhone or Galaxy. Credits of $500–$1000 off a new flagship are common, paid out as monthly bill credits over 24 or 36 months. The catch is that those bill credits typically require you to stay on the new carrier for the full credit period; leaving early forfeits the remaining credits. Read the terms before you commit.

Switch bonuses that pay off your old balance

All three majors periodically run a “we’ll pay off your current phone” offer — typically up to $800 paid byvirtual prepaid cardafter you submit your final bill with the remaining balance. These offers work, but they have friction: you submit documentation within 30–60 days of activation, the reward arrives 8–12 weeks later, and the card is a prepaid Visa or Mastercard with its own quirks (not a bill credit). Plan to eat the old balance on your own cash flow for several months and then recoup it.

Voicemails, apps, and the iMessage pitfall

The technical switch is the easy part. The messy part is the stuff tied to your specific carrier identity.

Voicemails

Visual voicemail, the transcribed list of voicemails in your phone app, is a carrier-side service. The messages themselves stay on the old carrier’s server and usually disappear within 30 days of the port. If you have keepsake voicemails (a departed grandparent, a memorable one from a friend), save them before you switch. On iPhone, tap the voicemail, tap Share, and save to Voice Memos or Files. On Android, the steps vary; most Android visual voicemail apps have an export option.

Apps

Almost all apps are independent of your carrier. Banking, social, work, and utility apps will log in the same way on the new carrier using your existing accounts. Two exceptions matter: apps that useSMS-based two-factor authenticationmay fail during the port window if a code is sent while the number is in transit. Expect a gap of up to an hour where you cannot receive one-time codes. Plan accordingly — do not, for example, attempt a large bank transfer during the port.

iMessage after switching

This is the number-one post-switch complaint and the one carriers almost never warn you about. When you first activated iMessage on an iPhone, Apple associated your phone number with your Apple ID on Apple’s servers. If you switch to Android or to a number that Apple still thinks is “blue-bubble,” texts from iPhone friends can silently be routed through iMessage to a device you no longer own, and never arrive as SMS.

The fix, if you are staying on iPhone, is to toggle iMessage off and on in Settings after the port completes; the phone re-registers the new carrier’s info. If you are leaving iPhone for Android, visit Apple’s Deregister iMessagepage and enter the ported number to fully remove it from Apple’s iMessage system. This takes a few minutes and saves months of mysteriously missing texts.

RCS and Android

RCS is the Android equivalent of iMessage and in 2025 Apple added RCS support to iPhone, so the split between “blue” and “green” bubbles matters less than it used to. Still, RCS is carrier-dependent: it sometimes gets stuck on the old carrier after a port, causing group chats to fracture. On Android, after switching, open Messages > Settings > Chat features, disable and re-enable RCS, and let it re-verify the new number.

Step-by-step: the actual day of the switch

Plan 45–60 minutes and pick a time when both carriers have live support available — weekday daytime is best. Avoid late Friday and holidays.

1. 0:00— Verify phone is unlocked. Verify eSIM or SIM-ready status. Back up the phone.
2. 0:05— Retrieve your port-out PIN from the old carrier and note your account number and billing ZIP.
3. 0:10— Open the new carrier’s activation flow (in-app or on web). Enter the number to port, old account number, and PIN.
4. 0:15— Scan the eSIM QR code (or insert physical SIM) when prompted. The new line appears on the phone as “Pending” or “Activating.”
5. 0:15–0:45— The port completes. You may see the old carrier’s service icon flicker off; the new carrier’s name appears. Test by dialing your own number from another phone; you should hear the new line ring.
6. 0:45— Toggle iMessage off and on. Send a test iMessage to a friend with an iPhone and to one with Android.
7. 0:50— Delete the old carrier’s eSIM profile if it is still present, to avoid the phone trying to connect to the old line.
8. 0:55— Confirm the old carrier’s account shows as closed or the line is removed. Some carriers require a confirmation tap in their app; others close automatically when the port completes.

First 72 hours: what to watch

The day-of switch usually goes smoothly. The problems that do appear tend to appear in the first three days, which is why it is worth paying attention during that window.

• Call forwarding: if you previously set call forwarding on the old carrier, it may not carry over. Dial *#21# or check the Phone app settings on your device to confirm.
• Voicemail:some carriers require you to set up voicemail from scratch on the new line. You will see a “voicemail not set up” banner; tap it and follow the prompts.
• MMS: multimedia messages (photos in text) use a separate carrier profile (the APN). If MMS fails in the first day, toggle airplane mode on and off; if that does not fix it, contact the new carrier to push a fresh APN profile.
• Group chats: iMessage and RCS group chats can fragment when one member ports. If you disappear from a group chat, ask to be re-added; the new number registration should propagate within 24 hours.
• Work phone systems: if you use Webex Calling, Microsoft Teams with phone, or similar, your employer may have your number provisioned against the old carrier. Let IT know so they can re-provision.

When it goes wrong

A port failure is rare but when it happens it feels dire. Here are the three most common failure modes and how to resolve each.

Port stuck in “pending” for more than four hours

The old carrier’s system did not validate your PIN or account number. Nine times out of ten this is a data mismatch. Call the new carrier’s port team (not general support; the port team is a separate line at every major carrier). Have your account number, PIN, and the last four digits of the SSN on the old account ready.

Number not arriving, old phone still has service

The port was canceled or rejected. The most common reason is that the old carrier still shows an outstanding balance or a freeze on the line. Clear the balance, lift the freeze, request a new PIN, and retry.

RCS or iMessage stuck on old carrier

Toggle the service off in Settings. Reboot. Re-enable. If that fails, remove and re-add your Apple ID (iMessage) or clear Google Messages cache and re-register (RCS). A final escalation is to contact the new carrier to confirm the number is fully activated on their side; occasionally a ticket to Apple is needed for a stubborn iMessage registration.

Switch incentives in 2026

Every carrier wants new customers. In 2026, the typical switch incentives fall into four buckets.

Trade-in for a new phone

Bring any working eligible phone, get $500–$1000 credit toward a new flagship. Paid as 24–36 months of bill credits. Requires the new line to stay active and on a qualifying plan.

Pay off your current phone

Switch with an existing phone that has a balance, and the new carrier pays up to $800 of that balance as a virtual prepaid card after you submit documentation. Best for people who are disappointed with their current carrier mid-contract.

Free line or family discount

Add a line to an existing plan and get one line free for a year, or a flat discount per line at three or more lines. Easy to stack with other offers.

MVNO discounts

Mint Mobile’s multi-month prepaid pricing cuts the cost per line to a fraction of postpaid. Visible offers a flat $25/month unlimited plan on Verizon’s network. US Mobile lets you pick Verizon or T-Mobile per line and changes network for free. Most MVNOs do not offer trade-in deals, but they do offer your savings immediately and indefinitely rather than as time-limited credits.

For deep dives on the big three networks and our top MVNO picks, see our provider pages on Verizon Wireless, AT&T Wireless, T-Mobile, and Mint Mobile. We also maintain head-to-heads such as Verizon vs AT&T Wireless and Mint Mobile vs Visible to help you pick the one that actually fits your usage.

Frequently asked questions

Quick answers to the questions we hear most often from readers who are planning or troubleshooting a carrier switch.