All Circuits Are Busy – What Is It And How To Fix It? [Multiple Ways]

Occasionally, you may encounter an error message stating, “all circuits are busy,” just prior to your phone call automatically disconnecting, regardless of whether you’re on Verizon, AT&T, Sprint or T-Mobile.

“All circuits are busy” is a general term that refers to the fact that all connections to your phone network are down. It is possible to get an error message stating “all circuits are busy” which can be caused by dialing the wrong number, poor network coverage, system network overload, or a service outage. It is possible for you to resolve the issue of “All circuits are busy” if you restart your handset, change your location, or remove/reinstall your SIM card in order to resolve the issue.

I am going to discuss in this post what it really means when you say that “all circuits are busy” and how you can go about dealing with it.


Do You Know What “All Circuits Are Busy” Really Means?


“All circuits are busy” It is a message that a significant number of users encounter on a regular basis. Despite the fact that your phone carrier may have the best network coverage, you may still encounter this issue.

An error message tells you that there is a problem with your connection preventing you from completing your call. Your phone provider may have reached its capacity limit if there are no free outgoing lines available.

Basically, your phone carrier has a limited number of lines that can handle multiple callers at once.

In order to transmit voice and data, cell phones do not use wires. Signals are transferred between a caller and a recipient via radio waves.

When you place a call, your phone checks for the nearest network tower and the signal strength.


Your phone sends a background origination message to verify your Mobile Identification Number and Electronic Serial Number.

You will receive a channel assignment message from your service provider after verification. As soon as your phone connects to the assigned channel, the call is completed. An “all circuits are busy” message will be displayed if there is not a free channel available to use.

It is important to note that all of the above processes take place in micro milliseconds, so you will not experience any delays at all.


There are several reasons why you are receiving an “All Circuits Are Busy” message.


  • There are no free outgoing connections available.


You’re getting an “all circuits are busy” error message because there aren’t any free outgoing lines at the moment.

Most of the time, this happens in small, local areas with limited phone lines and network towers.

Your phone company must assign a free channel to your number each time you attempt to make a call.

In the event that there are more users calling than free channels, you will receive the “all circuits are busy” message.




There are times when you may have limited outgoing connections, so just hang up, wait a few minutes, and then try again. There is no way to avoid the inevitable event that a line will eventually be freed up.


  • All Circuits Are Busy error message might appear if there is technical issue with the number you are dialing.


Indeed, there may be several outgoing phone lines available, but the error message “all circuits are busy” may still appear.

In most cases, the problem occurs when you miss a digit and dial the wrong number. If you call a number on a different network, you may also receive an all circuits are busy error.

Whenever you dial the wrong number, it is undoubtedly your fault that you have made the mistake.

If you have trouble calling a number on a different network, it’s not your problem, it’s theirs.




Call the right number if you realize you’ve dialed the wrong number, then hang up and correct the error. In the event that the problem persists, you may need to wait for a few minutes before trying again.

However, if the error originates from the recipient’s carrier, there’s nothing you can do but wait.


  • Coverage of the network is poor.


It is also possible for an “all circuits are busy” error to be caused by a poor network coverage.

If the network base station isn’t receiving signals from your device, you won’t be able to connect to available outgoing channels.

It’s possible that you have poor network coverage or it’s possible that the recipient has poor network coverage. If there are no network towers in remote areas, then this can happen as well.

There is also a possibility that it is caused by inadequate network equipment in your area. Regardless of the cause, the message “All circuits are busy” will always appear.




By checking the number of signal bars on your handset, you will be able to determine the strength and coverage of the network. Consider moving closer to a tower if the bars are too low.


  • Overloaded network in the system may cause “All Circuits Are Busy” error.


In the event that multiple subscribers are simultaneously using all the services offered by the system, network overload may occur.

The system can be overwhelmed by extreme traffic, regardless of whether they’re calling, texting, or connecting to data.

During peak hours and public holidays, network overloads are very common.

In the absence of additional equipment to handle the increased traffic, you will continue to receive “all circuits are busy” messages.




Wait until the traffic subsides before trying to make a call when there’s a network overload. Although the charges might be higher during off-peak hours, you can still call.


  • All Circuits Are Busy Error Message appears when there is an outage of service.


There are many phone carriers who promise their customers that their service will be uninterrupted 100% of the time. Downtimes, however, are almost inevitable and will always occur.

Weather, infrastructure damage, natural disasters, and old or damaged circuit lines can all cause service outages.

You may experience an outage in your home, neighborhood, or the entire service area. There is a possibility that you will receive an error message stating “all circuits are busy” if the problem is not mitigated as soon as possible.




Use the online service troubleshooter on your phone carrier’s website to check if there are any outages.

Check your area for damaged infrastructure and cut cables to determine the problem.

If you believe there is a service outage, contact your phone provider immediately to resolve the “All circuits are busy” issue.


  • Your number has probably been blocked by the recipient.


The recipient may block your number intentionally or erroneously, resulting in an “all circuits are busy” error message.

With the advent of call blocking apps, anonymous callers and spammers can be blocked.

Nevertheless, your recipient may mistakenly or intentionally list your number among their contacts.

When someone tries to place a call, these apps trigger a fast busy signal, preventing the call from going through.




If you are able to reach your contact, use a different number to call and ask them to unblock your number if the call is successful.


  • There are limited resources available.


As a general rule, phone carriers invest the majority of their resources in areas where the majority of their customers reside.

Maintaining network infrastructure can be expensive if the population does not warrant it, and it’s their job to make a profit.

There may not be enough resources allocated to your area if there are fewer subscribers.

The network coverage will be poor if there are fewer resources available. Therefore, you will receive more and more “all circuits are busy” messages in the future.




As the number of subscribers grows in your area, you may be able to petition your phone carrier to allocate more resources to your area.

If you want better services, you may have to switch to another network.


  • The cell phone has been damaged.


If you’re using a damaged phone, you might get an all circuits are busy message.

An internal antenna receives and sends network signals on all cell phones. An antenna that is damaged may affect the phone’s ability to transmit and receive radio signals.

In addition to causing damage, incorrect network configuration can also cause problems when making calls.

The settings on most cell phones are pre-configured, and any slight adjustment could result in an inability to make or receive a call.




Your handset can be repaired or replaced at no additional charge if the damage was caused by the manufacturer. In lieu of this, you might want to think about buying a new phone.

If you would like to restore the settings to their default state, go to phone settings, network & internet, and tap “Reset.”


Other than that, there are a few other ways that you can fix the “All Circuits Are Busy” error.


  • It is strongly suggestible that you restart your phone.


Probably the easiest way to resolve an all circuits are busy error on your phone is to restart it.

As a result, your phone will have a free outgoing line by the time the network is restored.


  • Please take heed that it is imperative that you take out the SIM card and reinstall it.


In order to restore network coverage, you can also remove and reinstall your SIM card. Reinstalling your SIM will automatically register it with your carrier and resolve any network problems.


  • Make sure that you use a different phone number or phone number.


In the unlikely event that none of these tips work, you could try a different phone or SIM.


Conclusion: All Circuits Are Busy [EXPLAINED]

If you receive the “all circuits are busy” error message, it means that there is a problem with your connection. There are a number of potential reasons why the “all circuits are busy” error message occurs.

  1. Outgoing connections are not available for free.
  2. There was a mistake in dialing the number.
  3. It is a network that does not have a good coverage area.
  4. There is an overloaded network in the system.
  5. A service outage has occurred.
  6. Calls can be blocked anonymously.
  7. The network has a limited number of resources that are available to users.
  8. Cell phone that has been damaged.

You can resolve all circuits are busy error by waiting a while before placing another call, and restarting your phone. You should change your phone number or SIM card, and then remove and reinstall it.

Would it be possible for you to let us know if you have resolved the all circuits are busy error? If you have done this, I would love to hear about what you did in the comments below if you have!



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