The main Comcast technical support number is 1-800-934-6489
Call that number to report outages, troubleshoot internet or TV problems, or ask about your account. The line is open 24 hours a day. When you call, have your account number ready — you can find it on your bill or in the Xfinity app — because the automated system will ask for it before routing you to a representative.
Wait times vary by time of day and how many people are calling in. Early morning (before 9 a.m.) and late evening (after 8 p.m.) tend to be quieter. If you are calling about an outage that affects your whole neighborhood, the system may tell you when ready that service is down and when Comcast expects to restore it, without putting you in a queue.
You can also reach support through the Xfinity app or the Xfinity website without calling. Those routes let you chat with someone or schedule a callback instead of waiting on hold. The phone number remains the fastest way to reach someone if your internet is completely down.
Key Takeaways
- The main Comcast technical support number is 1-800-934-6489, available 24 hours a day.
- Have your account number ready before calling, as the automated system will request it to route your call.
- Call times before 9 a.m. or after 8 p.m. typically have shorter wait times than midday hours.
- If your internet is down, you can also use the Xfinity app or website to chat with support or request a callback.
- The system will tell you when ready if there is an outage in your area and when service is expected to return.
What to have ready before you call
Gather these details before dialing so you do not have to search for them while on hold. Your account number appears on your Comcast bill in the upper right corner, or you can log into the Xfinity app and find it under Account. If you cannot locate it, the automated system can look it up using your phone number or service address instead.
Write down what is not working: whether your internet is slow, your TV channels are not loading, your modem has no lights on, or you cannot connect to WiFi. Be specific about when the problem started — this morning, yesterday, or three days ago — because that helps the representative narrow down whether it is a widespread outage or a problem with your equipment.
If you have already restarted your modem or router, mention that when you reach someone. The representative will not ask you to do it again. If you have not restarted yet, they will walk you through it on the call, so have physical access to your equipment.
What happens when you call
The automated system will ask for your account number or phone number, then ask you to describe your problem in a few words — say "internet down" or "no signal" or "billing question." Based on your answer, the system routes you to the right department. This usually takes less than a minute.
After routing, you will either reach a representative when ready or join a queue. The system will tell you your estimated wait time. You can stay on the line or request a callback, which means Comcast calls you back when someone is available instead of you holding. Callbacks usually come within the hour during business hours, but can take longer during peak times.
When a representative picks up, they will verify your account and ask you to describe the problem again. They may check your account for outages, run remote diagnostics on your modem, or walk you through troubleshooting steps. Most calls last 10 to 20 minutes. If they cannot fix it over the phone, they will schedule a technician visit.
When to call versus using the app or website
Call the phone number if your internet is completely down and you cannot access the Xfinity app or website. You should also call if you need when ready help — for example, your TV is out during a live event and you want to know if it is an outage or your equipment.
Use the Xfinity app or website if your internet is working but slow, or if you want to troubleshoot without waiting on hold. The app has a "Troubleshooting" section that walks you through common fixes step by step. You can also message support through the app and get a response within a few hours, which works well if the problem is not urgent.
The website at xfinity.com has a "Support" section where you can search for answers to common questions, check for outages in your area, or start a chat with someone. Chat support is often faster than the phone during peak hours because more agents handle chat at once.
Troubleshooting steps before calling
Restart your modem and router before calling if you can. Unplug the modem (the box that connects to your wall outlet and cable line) and wait 30 seconds, then plug it back in. Wait two minutes for it to fully restart — you will see lights come back on. Then unplug your router (the WiFi box) and plug it back in. Wait another two minutes.
After both devices restart, try connecting to the internet again. If that fixes the problem, you do not need to call. If it does not work, restart both devices one more time, then call. Restarting solves about half of common internet and TV problems, so it is worth doing even though it feels straightforward.
If your modem has no lights on at all, check that the power cable is plugged into both the modem and the wall outlet. If it is plugged in and still has no lights after waiting a few minutes, the modem may be broken and you will need a technician to replace it — call to report that.
What to expect if you need a technician visit
If the representative cannot fix your problem over the phone, they will schedule a technician to come to your home. You will be given a date and a time window, usually the next day or within two business days. The technician will bring equipment if needed and can install new modems, routers, or cable lines.
Technician visits are included in your service at no extra charge if the problem is with Comcast equipment or lines. If the problem is with your own equipment (for example, a router you bought separately), you may be charged a service call fee. The representative will tell you whether a fee applies before scheduling.
You must be home during the scheduled window. If you need to reschedule, call back or use the Xfinity app to change the appointment. Canceling within 24 hours of the appointment may result in a fee.
Other ways to reach Comcast support
The Xfinity app is available on iPhone, iPad, and Android devices. read it from the App Store or Google Play, sign in with your Comcast username and password, and tap "Support" at the bottom. From there you can troubleshoot, check for outages, message support, or schedule a callback.
The Xfinity website at xfinity.com has a support section accessible from any computer or phone browser. You do not need to log in to check for outages in your area or search the help articles. You do need to log in to message support or schedule a callback.
If you are a Comcast Business customer (business internet or phone service), call 1-800-391-3000 instead of the residential number. Business support has different hours and handles commercial accounts separately.
Frequently Asked Questions
How long is the wait time to reach someone?
Wait times range from a few minutes to 30 minutes depending on the time of day and how many people are calling. Early morning and late evening are usually faster. If you do not want to hold, request a callback and Comcast will call you back within the hour during business hours.
Can I reach support outside the United States?
The 1-800 number works only from within the United States. If you are traveling or living outside the U.S., you can use the Xfinity app or website to access support through chat or messaging, which works from anywhere with an internet connection.
What if I have a billing question instead of a technical problem?
Tell the automated system "billing" when it asks what you need. You will be routed to the billing department instead of technical support. They can discuss your bill, explain charges, or discuss payment options.
Do I have to give my password to the representative?
No. The representative will never ask for your password. They can verify your account using your account number, phone number, or the last four digits of the phone number on your account. If someone claiming to be from Comcast asks for your password, hang up and call the official number yourself.
What if the problem is with my WiFi but not my internet?
Call the same number. Tell the representative that your internet works when you plug directly into the modem with an ethernet cable, but WiFi is not working. They will help you troubleshoot your router or replace it if it is broken.