How to make sure you get emergency alerts on your phone

A tornado spins up on radar, a flash flood tears through a canyon, or an Amber Alert goes out for a child two counties away — and the notification that was supposed to interrupt everything never arrives. That failure happens more often than most phone owners realize, and almost never because the warning system itself broke down. It happens because a setting got switched off somewhere along the way, usually without anyone noticing. Getting emergency alerts on your phone depends on a chain of device permissions, carrier support, and software settings that can stop working after something as routine as an operating system update.

Wireless Emergency Alerts, the system that carries these messages, is run jointly by FEMA, the Federal Communications Commission, and the wireless industry. It does not behave like a weather app you have to open. The messages go out over cell towers to every compatible handset inside the warned area, whatever the carrier, the data plan, or the apps installed. Three main categories make up most of what people receive: presidential alerts, which cannot be turned off on any device, imminent threat alerts for events such as tornado and flash flood warnings, and Amber Alerts for child abductions.

That reliability only holds if the phone is configured to let the alerts through. A factory reset can return toggles to defaults that differ from what the previous device used. A Do Not Disturb or Focus schedule can be customized in a way that fights a system designed to break through silence on purpose. A phone left in airplane mode during a flight or overnight will miss a warning entirely, no matter how every other setting is arranged.

This guide covers the specific menus, permissions, and habits that decide whether a warning reaches you in time. It walks through the iPhone and Android screens where the controls sit, what determines which phones a cell broadcast reaches, which county-run sign-up services are worth adding as a second channel, and the points at which a correctly set up phone quietly loses that configuration. A full check of your own phone takes a few minutes.

Illustration: Quartz

Emergency alert controls on an iPhone sit in Settings, Notifications, in a section near the very bottom of that screen labeled Government Alerts. Three toggles appear there: Amber Alerts, Emergency Alerts, and Public Safety Alerts. All three need to be switched on for the phone to receive the full range of warnings.

Emergency Alerts handles imminent threats — tornado warnings, flash flood warnings, extreme wind warnings and other events that put people in immediate danger. Public Safety Alerts is a newer, separate category for information that matters without carrying the same urgency, such as a boil-water notice or localized guidance from a county agency. Amber Alerts covers child abduction notices issued by law enforcement. A fourth type, the national or presidential alert, has no toggle at all, because federal rules do not allow it to be turned off.

New iPhones ship with the three toggles enabled, and the trouble starts later. Restoring a new handset from an older backup carries forward whatever configuration was in place on the previous device. Someone who switched off Amber Alerts years ago after a 2 a.m. notification may never have switched them back on, and that choice follows them from phone to phone.

The check takes under a minute. Open Settings, tap Notifications, scroll past every installed app to the bottom of the list, and confirm all three switches show green.

Focus modes deserve a second look. iPhones running iOS 15 and later support custom Focus setups, including Sleep and Do Not Disturb schedules, that filter which notifications get through. Government alerts are designed to bypass those filters, but anyone who has built a heavily customized Focus profile should open it and review what has been allowed and blocked.

The ringer switch does not control any of this. A phone set to silent still sounds and vibrates for a government alert, because the alert tone works independently of the ringer position. A phone powered off completely receives nothing, and it does not collect the missed message once it starts up again.

Illustration: Quartz

Android keeps these controls in a menu usually labeled Wireless emergency alerts, reached on most current devices through Settings, then Safety and emergency, then Wireless emergency alerts. Samsung phones often route the same controls through Settings, Notifications, then Advanced settings.

Inside that menu sit separate switches for extreme threats, severe threats, Amber alerts, and on many devices public safety messages and test alerts. Each one operates independently. A phone can carry extreme threat warnings while Amber alerts sit switched off, or the reverse, and nothing on the home screen signals the gap.

Labels and locations shift between manufacturers, since Samsung, Google $GOOGL, Motorola and others each ship their own version of the software. When the Safety and emergency path does not exist on a particular handset, typing the word emergency into the Settings search bar surfaces the right menu on nearly any Android device, which is faster than hunting through submenus by hand.

Several secondary options in that same menu change how an alert reaches you. Many Android phones include a vibration toggle, an alert reminder that repeats the notification at set intervals after the first one, and a text-to-speech option that reads the message aloud. Some devices also keep an emergency alert history log listing messages already received, which is a quick way to confirm the phone has been picking up broadcasts rather than sitting misconfigured.

Alert volume deserves a separate look. On some Android phones it answers to its own control rather than the general ringer, so a muted handset may still sound a warning at full volume. On others, silencing the ringer silences everything. The behavior varies by brand, and the only way to know which applies is to open the menu and check.

Test alerts are worth understanding before switching them on. That toggle allows state and local authorities to send trial messages to the handset, which some people want for verification and others find disruptive during drills. It is switched off by default on many devices.

Anyone moving between an iPhone and an Android handset, or managing phones for family members on different brands, should expect to search for these settings somewhere new each time. A configuration that worked on one phone says nothing about what the next one is doing.

Illustration: Quartz

Wireless Emergency Alerts, shortened to WEA, is a public safety messaging system built by FEMA with the FCC and the country's wireless carriers, and it went live in 2012. Messages are broadcast straight from cell towers to every compatible handset in range, so no app, subscription, or data plan is needed to receive one.

That broadcast design separates WEA from a radar app or a local news push notification, both of which depend on software a user has to install and keep running in the background.

The system carries three primary categories. Presidential alerts deliver a national message during a national emergency and cannot be switched off on any device. Imminent threat alerts cover warnings for tornadoes, flash floods, hurricanes, and extreme wind, plus other events that pose immediate danger to life or property. Amber Alerts carry child abduction details, including descriptions of the child, the suspect, and a vehicle when that information is available.

A fourth category, Public Safety Alerts, came later. It gives authorities a channel for information that matters without rising to the level of an imminent threat, such as a localized hazard notice or guidance tied to an ongoing response.

Because the messages travel over the cellular network rather than the internet, they generally keep working when data service slows under heavy load — a common condition during a large-scale emergency, when a lot of people reach for their phones at once. Since 2019, carriers have been required to support alerts of up to 360 characters on LTE and 5G networks, up from an original cap of 90 characters. The text stays short enough that most alerts point recipients to local news or an official agency for fuller detail.

Delivery is targeted geographically. Only phones physically inside the affected cell tower coverage area receive a given alert, rather than every subscriber on a carrier nationwide. That explains a familiar experience for travelers: a driver crossing into a county under a tornado warning may get an alert minutes after entering the area, while the same phone stayed quiet an hour earlier on the highway behind. Location, not billing address, decides who hears the tone.

Illustration: Quartz

Airplane mode shuts off the cellular radio, and a phone with no cellular connection cannot receive Wireless Emergency Alerts at all — the government alert toggles underneath make no difference. Do Not Disturb works the opposite way. It filters notifications in software while the phone stays connected to the network, and WEA messages are built to sound through it.

That distinction matters at two specific moments. The first is a flight, where passengers switch on airplane mode and leave it there for hours. The second is bedtime, when some people reach for airplane mode instead of a Focus schedule to stop late-night calls. Warnings issued overnight carry added risk, since a sleeping household has no other cue that conditions have changed.

For overnight use, a Focus mode or Do Not Disturb schedule keeps the phone quiet without closing the warning channel. On both iPhone and Android, the default configuration of those modes lets emergency alerts display and sound while regular calls, texts and app notifications stay silenced.

In-flight internet creates a common misunderstanding. Travelers $TRV enable airplane mode, then switch Wi-Fi back on to join the onboard network, which restores email and messaging but does nothing for emergency alerts. WEA runs on cell broadcast, a transmission method built into cellular networks themselves, so a Wi-Fi connection cannot carry these messages. No setting, app or workaround routes a Wireless Emergency Alert over Wi-Fi.

The same gap applies after any stretch of disconnection. Alerts are not queued and delivered late. A message broadcast while a phone sat in airplane mode is gone, because the broadcast went out once to whatever devices were listening at that moment. Switching the cellular radio back on restores future alerts, not missed ones.

Checking the status bar before a flight, before sleep or before driving into an area under a severe weather watch takes seconds. A small airplane icon means the phone is receiving nothing from the cell network, including a tornado or flash flood warning for the exact spot where it is sitting.

Illustration: Quartz

Nearly every wireless carrier operating in the U.S. takes part in the Wireless Emergency Alerts system, and almost any handset sold through American retail channels over the past decade can receive the messages. Carrier participation is voluntary under FCC rules, but the major national networks and most regional and prepaid providers have opted in, so coverage is the default rather than the exception.

Hardware is the part worth verifying. A WEA message arrives by cell broadcast, a transmission method separate from SMS, and the phone needs a chipset that supports it. Devices designed and certified for American networks include that capability as standard. Feature phones that predate the system's 2012 launch generally do not, and neither do some handsets built primarily for markets outside the U.S.

That last group is easy to overlook. A phone bought unlocked from an overseas retailer, or brought home from a trip abroad and fitted with a U.S. SIM, can place calls, send texts, and run data normally while never delivering a single emergency alert. Nothing in the day-to-day behavior of the device reveals the gap. If no Government Alerts or Wireless Emergency Alerts menu appears anywhere in the settings app, that missing menu is the answer — there are no alert controls because there is no alert capability.

Prepaid customers on mobile virtual network operators, which lease capacity from a major carrier instead of owning towers, generally inherit WEA coverage from the underlying network. Asking the provider directly is still worthwhile, since account-level configuration on a budget brand does not always match the parent carrier's standard setup.

Anyone who cannot find the alert settings should look up the manufacturer's specification page for the exact model number rather than the general product line. The same phone name is often sold in several regional variants with different radio hardware inside. A carrier's support line can also confirm whether a particular device registered on its network is recognized as WEA-capable.

Illustration: Quartz

No consumer can trigger a live Wireless Emergency Alert on demand, so the only practical check is a deliberate review of the settings menu rather than an actual test broadcast. FEMA and the FCC periodically run nationwide tests of the Emergency Alert System and WEA together, pushing a test message to compatible phones across the country, and those occasional tests are the only time most people hear the alert tone outside a real emergency.

Between those national tests, walking the menu by hand is the most reliable verification available. On an iPhone, that means opening the Government Alerts section at the bottom of Notifications. On an Android device, it means opening the Wireless Emergency Alerts menu. In both cases, confirm every relevant toggle is switched on and that no Do Not Disturb or Focus configuration has been customized in a way that could override the alert system.

The second half of the check has less to do with menus and more to do with how the phone behaves in the places you actually keep it. A handset face down on a nightstand overnight will light up and sound the alert tone, but whether that carries through a closed bedroom door or across a room depends on the volume the device is set to and where it sits. A phone tucked into an inside jacket pocket or the bottom of a bag depends more on vibration than on sound. Those conditions are worth accounting for rather than assuming default behavior will be loud enough.

Households running several phones across different carriers or operating systems should check each device separately. One correctly configured handset says nothing about the rest, and family members who set their phones up at different times may have landed on different defaults.

Cellular tablets follow the same WEA rules as phones and warrant the same review. A Wi-Fi-only tablet receives nothing at all, since it has no cellular radio for the broadcast to reach — a gap that matters in homes where a tablet is the screen someone keeps closest at night.

Illustration: Quartz

Amber Alerts and severe weather warnings travel over the same Wireless Emergency Alerts pipeline, but separate toggles control each category on both iPhone and Android. A phone can have one enabled and the other switched off without its owner ever noticing the gap.

Amber Alerts carry information about child abduction cases that meet criteria set by state and local law enforcement. Those criteria generally require confirmation that an abduction took place and a belief that the child faces serious harm. The message usually includes a description of the child, the suspect, and a vehicle and license plate when police have that detail. The goal is to put those descriptions in front of drivers and passersby within minutes.

Severe weather messages fall under the imminent threat category and cover warnings issued by the National Weather Service for tornadoes, flash floods, hurricanes, and extreme wind events. These arrive with very short lead times, sometimes only minutes, because the conditions behind them develop and intensify fast. A tornado warning goes out when a tornado has been sighted or indicated by radar, not as a general forecast. That is why the alert is built to be loud and immediate rather than descriptive.

People sometimes disable Amber Alerts because the tone startles them, or because they have received notices about abductions hundreds of miles away in the same state. The settings menu allows that choice, but it is worth understanding exactly what it does. Switching the toggle off blocks every future Amber Alert on that device, including one issued for a child taken from a nearby street. The system offers no way to filter by distance or perceived relevance once the category is off.

Public Safety Alerts, the third category, get overlooked more than either of the others. They arrived on phones later than the original Emergency Alert and Amber Alert controls. Confirming that this toggle reflects a deliberate decision, rather than whatever a factory default happened to set, finishes a complete review of how the categories are configured.

Illustration: Quartz

Older handsets usually keep their Wireless Emergency Alert controls somewhere other than where current phones put them, so the menu location is the first thing to check when an aging device stops sounding alerts. Manufacturers have reorganized these settings several times across software generations, and a phone running a release from a few years back may hold the toggles under a general Notifications or Messages menu instead of the dedicated Safety and Emergency section used on newer models.

Software left without updates for long stretches can develop problems in how alerts are processed, even when every toggle still reads as switched on. Installing any pending operating system update is the simplest way to rule that out, since manufacturers patch alert-handling bugs the same way they patch anything else. Older devices eventually stop receiving updates altogether, which is a reason to treat a long-unsupported phone as a secondary alert source rather than the only one in the household.

Battery optimization is worth a look on Android. Aggressive power-saving modes restrict background activity to stretch run time, and those restrictions can delay or suppress notifications from apps and system services. Anyone running a maximum power-saving profile around the clock should check what it throttles, since the specifics differ by manufacturer and software version.

Devices that have been rooted, jailbroken, or otherwise modified outside official channels may not receive WEA messages reliably, because custom firmware can disrupt the cell broadcast reception the system depends on. That affects a narrow group of owners, but it matters for anyone running modified software on a spare handset.

An old phone with no active cellular service will never receive a WEA message regardless of what its settings say, since the broadcast travels over a carrier's network rather than the internet. A retired phone kept in a drawer as a Wi-Fi device or a music player sits outside the system entirely. Using one as an emergency backup works only if the SIM remains active on a paying line and the device stays powered on.

Illustration: Quartz

Local opt-in alert systems cover the ground Wireless Emergency Alerts leave open, carrying neighborhood-level information that rarely rises to the threshold for a WEA broadcast. Counties, cities, and university campuses across the U.S. run their own notification services, and registering for the one covering your address adds a layer the toggles on a phone cannot provide.

CodeRED, Everbridge, and Nixle are among the platforms local governments license for this work, though residents usually encounter them under the name of their own county or city rather than the vendor's. These services carry road closures, water main breaks, boil-water advisories, shelter openings, police activity on a specific block, and evacuation instructions for a single subdivision. WEA messages are tied to cell tower coverage areas and reserved for threats to life and property, so a bridge closure or a contained gas leak often never triggers one.

Registration generally runs through a city or county emergency management website and asks for a street address, not just a phone number. That address decides which messages reach you, which is how one of these systems can warn a single flood-prone street without alerting the rest of town. Most sign-up forms let you choose categories and delivery methods, including text, automated voice call, and email, and many allow a landline or a second household number on the same account.

NOAA Weather Radio provides a channel that does not rely on the cellular network. The National Weather Service broadcasts continuously on seven frequencies between 162.400 and 162.550 MHz, and a receiver with Specific Area Message Encoding can be programmed with county codes so it sounds an alarm only for warnings covering your area. When towers lose power or saturate after a hurricane, those broadcasts often continue.

The FEMA app adds a third path, delivering National Weather Service warnings for up to five saved locations, which can include a parent's house or a child's school in another county. Each of these channels operates independently, so a problem with one does not silence the others. Setting up at least one alongside the alert settings already on a phone takes a few minutes and closes a gap that WEA was never built to handle.