What Is Call Waiting and What Does It Mean?

What call waiting means

Call waiting is a phone service that tells you when someone else is trying to reach you while you are already on a call. Instead of the second caller automatically getting a busy signal, your phone alerts you, usually with a short tone in the earpiece and an on-screen notice, so you can decide whether to answer, ignore or reject the new call.

In plain terms, the phrase describes exactly what happens: a second call is waiting for you. It is a carrier feature that your phone supports, not a separate app, and it applies to regular voice calls on your mobile number or landline.

How call waiting works

When a second call arrives during an active conversation, the network does not reject it. It holds the incoming call and signals your phone, which plays an alert tone and shows the incoming caller if caller ID is available. The person you are already talking to normally does not hear this tone.

Once the alert appears, the phone typically offers these choices:

• Answer the new call and put the current one on hold, then switch between the two.
• Answer the new call and end the current one.
• Reject the new call, which usually sends it to voicemail if you have voicemail set up.
• Ignore the alert and keep talking; the second call keeps ringing until the caller hangs up or the network redirects it.
• On some phones and plans, merge both calls into a conference call.

The basic behavior is common across phones, but the details are not. Whether call waiting is on by default, what the setting is called, where it sits in the menus and which options appear during a call depend on your carrier, phone manufacturer, software version and whether the call is carried over the standard mobile network, VoLTE or Wi-Fi calling. On many networks, the switch on your phone actually changes a setting stored by the carrier.

What it means when you call someone who is already on the phone

If the person you are calling has call waiting turned on, you will usually hear normal ringing rather than a busy signal, and you are generally not told that they are on another call. They receive the alert on their side. If they do not switch over, the call may keep ringing or go to their voicemail, depending on their carrier and voicemail settings. If they have call waiting turned off, you are more likely to hear a busy tone or be sent straight to voicemail.

Using call waiting on Android

On Android, call waiting is controlled from the settings of the phone app rather than the main system settings in most cases. Because manufacturers and carriers customize these screens, the exact location varies. These general steps help you find it without relying on a specific menu path:

• Open the Phone app that you use to make calls.
• Open its settings, usually from a menu icon on the main screen.
• Use the search field if the settings screen has one, and search for call waiting.
• If there is no search, look through sections related to calling accounts, your SIM, or additional or supplementary call settings.
• Turn the option on or off and wait for the phone to confirm the change with the network; an error message can mean the carrier does not allow the change from the phone.

On many GSM-based networks, standard dial codes can also manage the service: dialing *43# and pressing call usually activates it, #43# deactivates it and *#43# checks its status. Not every carrier supports these codes, so if they return an error, check with your carrier.

Whether to keep it on is a practical decision. Leaving it enabled means you are less likely to miss an important call while talking to someone else. Turning it off temporarily can make sense when an interruption would be costly, such as a call you are recording, a long support call you do not want to risk dropping, or a conversation where switching lines by accident would be a problem. With it off, second callers will typically get a busy signal or reach voicemail instead.

Video and voice calls made through internet apps are handled by those apps, not by your carrier's call waiting setting. Each app decides how to show a second incoming call, and what happens when a regular phone call arrives during an app call depends on the app and your operating system version. If you rely on your phone for video calls, check that app's own call and notification options.

Limits and related questions

• Carrier support: call waiting must be offered by your carrier and included in your plan; some plans or prepaid services may handle it differently.
• Call waiting versus call hold: call waiting is the alert about a second call, while hold is what happens to the first call when you switch.
• Call waiting versus conference calling: merging calls is a separate capability that not every carrier or plan offers.
• Call forwarding: if you have forwarding set for when you are busy, call waiting can change when that forwarding takes effect, because your line is not treated as busy while a call is waiting.
• Dual-SIM phones: on many dual-SIM phones only one SIM can be in a call at a time, so a call to the other number may not produce a waiting alert unless your phone and carriers support it.
• Caller ID: whether the waiting caller's number or name appears depends on their caller ID settings and your carrier.
• Landlines: many landline services offer call waiting too, often switched with a short dial code or button; the exact method depends on the provider.

If call waiting seems to stop working, first confirm the status in the phone app or with the status code, then check whether the issue happens only on Wi-Fi calling or only on one SIM. Behavior that differs between those modes is usually a carrier or network setting rather than a fault in the phone, and your carrier can confirm what your plan supports.