If 911 will not connect, do not keep redialing the same number and do not call just to test whether it works. Try the call once more, then switch to a backup: text 911 if your area supports it, use Wi-Fi calling if your home broadband is still up, call your local dispatch number directly, or use satellite SOS if you have no signal at all. The method that works depends on what failed, so keep all five backups ready before you need them.
What should you do first if 911 won’t connect?
First, check whether the problem is your phone or the network. Move to a window or step outside, then try 911 once more. A single failed call can be a dead zone, not an outage. If the call still will not connect, stop redialing and switch methods: text 911, try Wi-Fi calling, call a local dispatch number, or use satellite SOS. Redialing a broken route wastes the minutes that matter, and test calls tie up dispatchers who are handling real emergencies.
- Try 911 once more from a different spot, near a window or outside.
- Text 911 with your exact location and the nature of the emergency.
- Try Wi-Fi calling if your home broadband is working but cell service is not.
- Call your local police or fire dispatch number directly from a saved contact.
- Use satellite SOS if your phone supports it and no network is available.
How does text-to-911 work, and where is it available?
Text-to-911 lets you send a text message to 911 from your mobile phone, but it is only available in certain locations. The FCC encourages call centers to accept texts, but each call center decides whether to deploy it, so coverage is not universal. Voice calls remain the preferred method whenever they work, because a call gives dispatchers more information than a text. To check your own area in advance, the FCC publishes a list of areas where text-to-911 service is available, updated monthly, on its text-to-911 guide page.
If you text 911, put your exact location first, including the address, apartment or unit number, cross streets or mile marker. Location data from a text may not be exact enough for responders to find you, so type it out yourself. Keep the message short and plain: what happened, where you are, and how many people are involved. Do not send photos or video, do not use a group text, and do not use slang or emojis. New York City’s official text-to-911 instructions put it the same way: no group chats, no photos, videos, GIFs or emojis, and complete words, not abbreviations. If text-to-911 is not available where you are, your carrier must send an automatic bounce-back message telling you to contact emergency services another way. If you get no reply at all, try another method immediately rather than waiting.
One misconception to clear up: you cannot reach 911 from WhatsApp, iMessage or any app that does not text with US phone numbers. The FCC’s text-to-911 rules do not cover apps that cannot text to and from US phone numbers, or apps that only message their own users or work through social media. Use your phone’s built-in SMS texting app, with 911 in the recipient field.
What if you cannot hear or speak on a call?
If you are deaf, hard of hearing or speech disabled, text-to-911 is an option wherever it is available, and you should tell the operator if you are deaf so they can adjust how they communicate. If text-to-911 is not available where you are, the FCC says to use a TTY or a telecommunications relay service if possible. Do not let a voice-only plan be your only plan: set up the relay option before you need it.
Can Wi-Fi calling reach 911 when your cell network is down?
Yes, and this is the backup that mattered most in the October 2026 California outages. That outage was carrier-specific: AT&T and T-Mobile cell users were affected, while many people’s home broadband kept working. Wi-Fi calling routes your call over broadband instead of the cellular network, so if your internet is up, a 911 call over Wi-Fi can still get through even when cell voice cannot.
There is one catch you must know before you rely on it. A Wi-Fi 911 call is routed on the E911 address you registered with your carrier, not your phone’s live location. If you call from somewhere other than that address, the dispatcher still sees the registered address, so say your actual location first in the call. Check the registered address in your phone’s Wi-Fi calling settings now, and update it whenever you move. Wi-Fi calling also has to be switched on before the outage, and it dies with your router if the power goes out, so it is a strong backup, not a cure-all.
What is satellite SOS on iPhone and Pixel?
Satellite SOS is for the case where no cellular or Wi-Fi network exists at all. On iPhone 14 and newer running iOS 16.1 or later, try calling 911 first; if the call cannot connect, the phone offers Emergency Text via Satellite. On Pixel 9 and Pixel 10, dialing 911 with no service brings up a Satellite SOS option. Both are text-only: you answer a short questionnaire about who needs help and what happened, and responders use your location and remaining battery level to plan the rescue.
Satellite SOS needs a clear view of the sky. Go outside, away from trees and tall buildings, and follow the on-screen aiming prompts. A message can take around 30 seconds in clear conditions and a minute or more under tree cover, and it may not work at all under heavy cover or indoors. Try the satellite demo on your phone before you ever need it, so the aiming steps are familiar in a real emergency.
What if your phone has no built-in satellite SOS?
You may still be covered, and this is where the old device list in this guide was wrong. T-Mobile’s T-Satellite service, powered by Starlink, offers free texting to 911 for anyone with a compatible phone, whatever carrier they are on, including Verizon and AT&T customers. Compatible devices include iPhone 13, Pixel 9a, Samsung Galaxy S21 and newer models, plus recent Motorola phones, and it deliberately excludes phones that already have built-in satellite emergency features, like iPhone 14 and later models. Coverage reaches roughly 500,000 square miles of the US where cell towers do not reach. Unlike Apple’s version, it needs no sky-pointing: when cell signal drops, the phone switches to satellite on its own. To text 911, put 911 in the recipient field like a normal text, and your location is shared with 911 automatically. The same route can also text 988 for mental health support.
The catch is enrollment: if you are not a T-Mobile customer, you need an unlocked phone with eSIM capability and you must sign up through T-Mobile’s sign-up page in advance. It will not help you in the moment if you have never enrolled. Verizon customers have a separate route: Verizon’s Skylo-based satellite messaging on select Android phones, including the Galaxy S25 series, Galaxy Z Fold7 and Z Flip7, and Pixel 9 and Pixel 10 phones, lets you reach 911 with Satellite SOS when you have no service, with Google Messages as the default messaging app. Dial 911 with no signal and follow the on-screen prompts.
How do the backup methods compare?
Each backup covers a different failure. Use this table to pick the right one.
| Method | Needs | Works when | Limits |
|---|---|---|---|
| Text-to-911 | Cell signal, supporting call center | Voice calls fail but texts go through | Not available everywhere; no photos or group texts |
| Wi-Fi calling | Working broadband, Wi-Fi calling switched on | Cell voice fails but home internet works | Dispatcher sees your registered E911 address, not your live location |
| Local dispatch number | Any working phone, number saved | 911 routing fails but direct lines work | You must know the number in advance |
| Corded landline | Landline connection | Power outage or mobile network outage | Only helps at home or office |
| Satellite SOS | Satellite-capable phone, clear sky | No cellular or Wi-Fi at all | Text only, outdoors only, can be slow; T-Satellite needs advance enrollment for non-T-Mobile users |
What should you keep ready before an outage?
Preparation takes ten minutes and pays off only in the worst moment. First, enroll in advance for free satellite 911 texting if you are not a T-Mobile customer, and switch on Wi-Fi calling and check that its registered E911 address is current. Save your local police and fire dispatch numbers in your phone and write them on paper near a corded phone. Check the FCC’s list for whether your county supports text-to-911 before you need it, and run the satellite SOS demo if your phone offers one. Keep a charged power bank with the phone, and know the location of your nearest fire station. None of this helps once the outage starts unless it is already done.
Frequently asked questions
Can I test whether 911 works from my phone? No. Officials explicitly warn against test calls, because even unconnected calls can generate callbacks that pull dispatchers away from real emergencies. Test the satellite demo instead, which does not contact 911.
Does text-to-911 work everywhere in the US? No. It is only available where the local call center has deployed it. Check the FCC’s monthly-updated list of supporting areas, linked in the sources below. If it is unavailable, you should get a bounce-back message telling you to use another method.
Does satellite SOS work indoors? No. It needs a clear view of the sky and horizon. Go outside and follow the aiming prompts, and expect the first message to take longer than a normal text.
What if I have no signal and no satellite phone? Go to the nearest fire station, police station or hospital in person, or flag down a law enforcement vehicle. During the October 2026 California outages, that was the advice for residents whose phones could not connect at all.
Sources
- FCC, “Text to 911: What You Need To Know” (voice calls preferred; availability varies by call center; monthly-updated list of supporting areas; bounce-back messages; TTY or relay service if text-to-911 is unavailable; app-scope exclusions): https://www.fcc.gov/consumers/guides/what-you-need-know-about-text-911
- Apple Support, “Connect to a satellite with your iPhone” (iPhone 14 or later, no cellular or Wi-Fi, clear sky view, messages can take 30 seconds or more): https://support.apple.com/en-us/105097/
- Google Pixel Phone Help, “Get emergency help through satellite with your Pixel phone” (dial 911 with no coverage, Satellite SOS option in the dialer, questionnaire, Google Messages as default): https://support.google.com/pixelphone/answer/15254448?visit_id=638954615197623191-3129170051&p=satellitesos&rd=1
- AppleInsider, “iPhone satellite SOS saves six skiers after Lake Tahoe avalanche”, 2026 (iPhone 14 and newer, iOS 16.1 or later, clear sky view, text-only): https://appleinsider.com/articles/26/02/19/iphone-satellite-sos-helps-save-six-skiers-after-lake-tahoe-avalanche
- New York City, “Text-to-911” (no group chats, no photos, videos, GIFs or emojis, complete words not abbreviations): https://www.nyc.gov:443/site/text911/index.page
- NCT911, “Can I Connect My Address to My Cell Phone? Sort of.” (Wi-Fi 911 calls route on the registered address; the dispatcher receives the registered address, not the caller’s current location): https://nct911.org/can-i-connect-my-address-to-my-cell-phone-sort-of/
- TechRepublic, “T-Mobile Makes 911 Satellite Texting Free for All Carriers” (free Text to 911 on any carrier; iPhone 13, Pixel 9a, Galaxy S21 and newer, recent Motorola; excludes iPhone 14 and later; about 500,000 square miles): https://www.techrepublic.com/article/news-t-mobile-satellite-texting/
- GadgetHacks, “T-Mobile Opens Free Satellite 911 Texting to All Carriers” (non-T-Mobile enrollment via unlocked phone with eSIM and sign-up page; no sky-pointing; 988 texting on the same route): https://smartphones.gadgethacks.com/news/t-mobile-opens-free-satellite-911-texting-to-all-carriers/
- Verizon, “Satellite SOS and messaging FAQs” (Skylo partnership; Galaxy S25 series, Z Fold7, Z Flip7, Pixel 9 and Pixel 10; 911 access via Satellite SOS with no service; Continental US, Hawaii and Alaska): https://www.verizon.com/support/satellite-faqs/
- TechReview.si, “California 911 Outages: What to Do If Emergency Calls Won’t Connect in Riverside, Oakland and Santa Barbara”, 23 Oct 2026 (alternate dispatch numbers during a real outage): https://techreview.si/california-911-outages-riverside-oakland-santa-barbara/
