How to Block Outgoing Calls on Android (All Calls or Just One Number): Every Method Compared (2026)

To block every outgoing call on Android, turn on "All outgoing calls" under call barring in the Phone app, or dial *33*password# with your operator's barring password. To block calls to one number, or only at certain hours, Android has no built-in setting, so you need an outgoing call blocker app.

That is the short version. The longer one matters because "stop outgoing calls" means different things to different people: a phone that cannot call anyone, a phone that cannot call one particular number, a child's phone that should only reach family, or a rule that only applies in the evening. Each of those has a different best tool, and some of the tools people reach for first, such as airplane mode or taking out the SIM, stop incoming calls too. This guide is the map: every method, what it blocks, what it leaves working, how easy it is to undo, and where to go for the full steps.

Steps and codes are current as of September 2026. Menu names vary by phone maker and Android version. Carrier features depend on your mobile operator and plan.

1. Which one do you need?

Start from what you are actually trying to stop, then jump to that section.

• Stop ALL outgoing callsFor a while or for good. Call barring is the standard answer.Call barring →
• Stop calls to ONE number, or a fewEvery other call keeps working. No built-in setting does this.An app →
• Only at certain hours, or after N callsCall barring and FDN have no timer and no counter.Schedules and limits →
• Stop SOMEONE ELSE calling outA child, a shared phone, or a work phone.FDN, parental controls, device management →
• Stop YOURSELF calling a numberThe hard part is that you can undo any block in seconds.A block that takes an hour to switch off →
• Just hide your numberThat is caller ID, a different setting entirely.Caller ID →

In-depth guides: blocking all outgoing calls, blocking calls to one number, blocking at certain hours, call limits, and stopping yourself from calling someone.

2. Every way to stop outgoing calls, compared

The methods differ on six questions: can they block just one number, can they follow a schedule or a limit, do they need your operator or a code, how easily can the rule be undone, do incoming calls keep working, and are emergency calls still possible.

3. Carrier call barring: every outgoing call, at the network

• Blocks: every outgoing call
• One number ✕
• Needs: operator + barring password
• Undo: instant, with the password

Call barring is a service your mobile operator runs, defined in the GSM standard. The option you want is All outgoing calls (the standard name is Barring of All Outgoing Calls). While it is on, the network refuses every call the phone tries to place. Incoming calls, texts, and mobile data keep working, and emergency numbers are never barred.

By code — type these in the dialer and press call. Replace PW with your four-digit barring password:

The barring password is issued by your operator. It is usually 0000 by default; some operators set a different default or print it with the SIM. It is not your SIM PIN or your screen lock.

By menu:

• Samsung Galaxy — Phone → ⋮ → Settings → Supplementary services → Call barring → Voice call → All outgoing calls, then enter the password. Voice call and Video call have separate switches.
• Google Pixel and the Google Phone app — Phone → ⋮ → Settings → Calling accounts → your SIM → Call barring → All outgoing calls. On the Pixel we tested, the entry only opens while the SIM's mobile data is on.

Its limit: call barring works by category. It can stop every outgoing call, or every international call, but never calls to one particular number, and it has no schedule. It also depends on your operator: if the menu is missing or the code returns an error, the service is not available on your plan. Full detail, including every code and the reasons barring refuses to switch, is in call barring on Android; the Galaxy-specific steps are in how to block outgoing calls on a Samsung.

4. Fixed Dialing Numbers: only the numbers on a list

• Blocks: everything except a list
• One number ✕
• Needs: PIN2
• Undo: instant, with PIN2

Fixed Dialing Numbers (FDN) is a SIM feature. You store a list of approved numbers on the SIM and switch FDN on; from then on the phone can only call those numbers, plus emergency numbers. Leave only one or two numbers on the list and the phone is, in effect, blocked from calling anyone else.

1. Open the Phone app → ⋮ → Settings.
2. Samsung: Supplementary services → Fixed dialling numbers. Pixel: Calling accounts → your SIM → Fixed dialling numbers.
3. Add the numbers that should stay callable to the FDN list.
4. Tap Enable FDN and enter PIN2, a second SIM code from your operator.

Its limit: FDN is an allow-list, the opposite of a block list. To block just one number with it you would have to list every other number you might call. PIN2 locks after three wrong tries, and unlocking it needs PUK2 from your operator. Incoming calls keep working, but recent Android versions also check outgoing texts against the list. The walkthrough is in Fixed Dialing Numbers on Android.

5. Airplane mode or removing the SIM

• Blocks: mobile-network calls, in and out
• Incoming calls stop too ✕
• Needs: nothing
• Undo: one tap

Cutting the phone off from the mobile network stops outgoing calls in one tap, or physically if you take the SIM out. It works, but it is not really a block: incoming calls stop too, along with texts and mobile data. Wi-Fi can be switched back on inside airplane mode, so apps keep working over Wi-Fi, but calls over the mobile network cannot go out or come in. If Wi-Fi Calling is turned on, calls can still go through over Wi-Fi.

Its limit: the same tap that turns it on turns it off, with no password. It suits a short offline stretch. It is no use if you need to stay reachable, and no use at all if the person you are trying to stop from calling is you. Whether emergency calls can still be placed depends on the phone and the network, so do not rely on it.

6. Work and school phones: device management

• Blocks: every outgoing call
• Set by: an administrator
• Undo: administrator only

Android has a system-level restriction called "disallow outgoing calls". When it is set, the phone cannot place any call except emergency calls, and nothing on the phone can override it. Only a device administrator can set it: the management system an employer or school installs on phones it owns or manages.

If this is your own personal phone, this method is not available to you. If it is a company phone that suddenly cannot call out, the restriction was set by your IT administrator, and only they can lift it.

7. Parental controls on a child's phone

• Allows: approved contacts only
• Set by: a parent
• Android 14 or later

For a child's Android phone, Google Family Link can decide who the child calls and texts. In the Family Link app, a parent selects the child's account, taps Controls → Contacts, calls & text, and chooses under "Allowed calls & texts":

• Anyone — no limit.
• Contacts I add & limited groups — contacts the parent has added to the child's account, plus groups that include at least one of them.
• Only contacts I add — only the contacts the parent added.

Google lists the requirements as Android 14 or later on the phone (or Wear OS 5 on a watch), and says the limits apply only in certain apps, such as Google Messages and Google's Phone app, not in apps like WhatsApp. Google also states that emergency services are not affected. Unlike the carrier and SIM methods, this limit covers incoming calls as well: the child can only call and receive calls from approved contacts.

On a Samsung Galaxy, Samsung Kids is a separate walled mode where a parent chooses the contacts and apps a child can use; it is covered in the Samsung guide. FDN (section 4) is the SIM-level version of the same idea and works without any account.

The limit of all parental tools: they are allow-lists run by a parent. They are not designed for an adult who wants to stop calling one number on their own phone.

8. An app: one number, certain hours, a call limit, or everything

• Blocks: numbers you choose, or everything
• Hours and call limits ✓
• Undo: takes effect one hour later
• Android only

Everything above is either a switch for the whole phone or an allow-list. None of it can say "not this number", "not after 10 p.m.", or "no more than three calls a week". That takes an app that uses Android's call-redirection role, which lets an app you choose see each outgoing call as it is placed and end the ones you asked it to end, before they ring. How the role works, and a checklist for comparing apps, is in outgoing call blocker apps on Android.

NoDial is built on that role. Setup is short:

1. Install NoDial and grant it the call-handling role when Android asks.
2. Add a number you have decided not to call.
3. Choose how it is blocked: always, on set days and hours, or with a call limit of a set number of calls per day, week, or month.

Calls to that number end before they connect; every other call, incoming calls, texts, and your contacts are untouched. On the Premium Unlimited plan there is also a Block all outgoing calls button on the home screen, with the same three modes: always, set hours, or a call limit for the whole phone. While it is on, it replaces your number list; the list applies again when you turn it off.

Two design choices separate it from the built-in methods:

• Turning a block off takes effect one hour later. Turning it on is instant; you can cancel the turn-off during that hour. The delay is deliberate: it gives the moment of impulse time to pass, so a rule you set calmly is not switched off in a second.
• Emergency numbers can never be added, and emergency calls are never blocked in any mode.

There is no barring password and no PIN2, and nothing on the SIM or the network changes. The first number is free, so you can test the whole flow, including the one-hour delay, before deciding anything.

Its limit: it covers phone calls placed through Android's calling system, not voice calls made inside internet-calling apps. It is Android only.

* The one-hour delay applies to switching a block off. Editing a rule's hours or call limit is saved straight away. When you add a number, NoDial refuses common emergency numbers such as 911, 112 and 999, and emergency calls are never blocked in any case.

9. On an iPhone

NoDial is an Android app and does not run on an iPhone. The closest built-in iPhone feature is Communication Limits in Screen Time. Apple describes it as a way to allow or block communication, including incoming and outgoing phone calls, FaceTime calls, and messages, with certain contacts in iCloud, either at all times or during certain periods.

1. Make sure Contacts is turned on in iCloud (Settings → your name → iCloud).
2. Go to Settings → Screen Time → Communication Limits.
3. Tap During Screen Time and choose Contacts Only, Contacts & Groups with at Least One Contact, or Everyone.
4. Optionally, tap When Device Paused or Unavailable and choose Always Allowed or Everyone.

According to Apple, if you try to call someone who is blocked by these settings, their name or number appears in red in your recent calls, and you can reach them again once the limit is changed. Apple's guide to the same feature on Mac states that communication to known emergency numbers is always allowed. Like the Android allow-lists, this works by approved contacts, not by blocking one number you choose, and it comes off as soon as the settings are changed.

10. Looking to hide your number instead?

Some people who search for "turn off outgoing calls" actually want the call to go through without showing their number. That is caller ID, a separate setting that blocks nothing.

• For every call, on a Samsung Galaxy — Samsung's support page gives the path Phone → ⋮ → Settings → Supplementary services → Show your caller ID, with the options Network default, Never, and Always. Samsung notes it may not work if your operator does not support it. On other phones, look for a caller ID option in the Phone app's settings; the location varies by maker.
• For one call, in the US — Verizon and AT&T both say to dial *67 before the number. Both also say it does not apply to toll-free numbers or 911.
• For one call, on some other networks — Vodafone Australia, for example, tells customers to dial #31# before the number. Codes vary by operator and country, so check your own operator's help page.

Vodafone Australia also notes that hiding your caller ID only applies to calls: a text message still shows your number.

11. Troubleshooting

• There is no Call barring option in the Phone app. Your operator most likely does not offer the service on your plan. In the United States the service is rarely advertised and the setting is often missing from the Phone app, so if you are on a US carrier, check with them before relying on it. The codes will fail too in that case.
• The barring password is rejected. 0000 is only a default. The password is set and reset by your operator, not the phone maker. Stop after a second wrong try: some networks lock the service after a few attempts.
• "Connection problem or invalid MMI code". The network refused the request: the service is not provisioned on your SIM, the password is wrong, or you have no signal. On a Pixel, check that mobile data is on for that SIM.
• Outgoing voice calls are barred but video calls still go out on a Samsung. One UI keeps Voice call and Video call barring on separate tabs. Switch both.
• You cannot turn barring off again. Use the same password with #33*PW# or the menu. If it no longer works, your operator can remove the barring. A factory reset does not help, because the rule lives on the network.
• The phone says "Fixed dialing only" or refuses a number. FDN is on and the number is not on the list. Add it or disable FDN with PIN2. If PIN2 is locked, ask your operator for PUK2 before typing anything.
• A work phone cannot call out and nothing in settings changes it. That is a device-management restriction; only the administrator can lift it.
• Will emergency calls still work? Yes with call barring, FDN, device management, Family Link, and NoDial. Airplane mode is the one to be careful with.

12. FAQ

How do I block outgoing calls on Android?

For every call, turn on call barring's "All outgoing calls" in the Phone app's settings, or dial *33*password# with your operator's barring password. For calls to specific numbers, or only at certain hours, use an outgoing call blocker app such as NoDial, since Android has no built-in setting for that.

How do I stop outgoing calls but still receive calls?

Use call barring, Fixed Dialing Numbers, or an outgoing call blocker app. All three leave incoming calls working. Airplane mode and removing the SIM stop incoming calls too.

What is the code to turn off outgoing calls?

*33*password# bars all outgoing calls, #33*password# turns the barring off again, and *#33# shows whether it is on. The password is the four-digit barring password from your operator, usually 0000 by default. Not every operator accepts the codes.

Can I block outgoing calls to just one number?

Not with Android's built-in settings. Call barring works by category and Fixed Dialing Numbers is an allow-list. A per-number outgoing blocker such as NoDial blocks only the numbers you choose, always, on set days and hours, or after a set number of calls.

How do I stop my child's phone from calling people I don't know?

On Android 14 or later, Google Family Link lets a parent limit calls and texts to contacts the parent adds, under Controls, then Contacts, calls and text. Fixed Dialing Numbers does the same at SIM level with PIN2. On an iPhone, use Screen Time Communication Limits.

Can emergency calls be blocked by accident?

Not with call barring, Fixed Dialing Numbers, device management, Family Link, or NoDial, which all leave emergency numbers callable. NoDial does not let you add emergency numbers at all. In airplane mode it depends on the phone and network.

How do I make outgoing calls without showing my number?

That is caller ID, a different setting. On a Samsung Galaxy it is under Phone, Settings, Supplementary services, Show your caller ID. In the US, Verizon and AT&T say to dial *67 before the number for a single call.

13. Summary

• Call barring: every outgoing call, at the network, with an operator password. No single numbers, no schedule. Details in call barring on Android.
• FDN: only the numbers on a SIM list, guarded by PIN2.
• Airplane mode or removing the SIM: stops calls over the mobile network both ways, incoming included, and comes off in one tap.
• Device management and parental controls: rules set by an administrator or parent for someone else's phone.
• NoDial: the numbers you chose, or every call, always, on set hours, or with a call limit. Turning a block off takes an hour; emergency calls are never blocked. First number free.

NoDial — block outgoing calls to the numbers you choose, or every callPer number, on a schedule, or with a limit. Emergency calls never blocked. First number free.

Sources

• ETSI, GSM 03.88 "Call Barring (CB) supplementary services – Stage 2" (defines Barring of All Outgoing Calls) etsi.org
• MakeUseOf, "What Is Call Barring on a Samsung Phone and How Do You Use It?" (Samsung menu path and the 0000 default) makeuseof.com
• Google Pixel Community, "Call barring" (path: Phone → Settings → Calling accounts → SIM → Call barring) support.google.com
• Wikipedia, "Fixed Dialing Number" en.wikipedia.org
• Android Developers, "UserManager: DISALLOW_OUTGOING_CALLS" (the device-management restriction; emergency calls remain permitted) developer.android.com
• Android Developers, "SmsManager: RESULT_ERROR_FDN_CHECK_FAILURE" (outgoing texts are also checked against the FDN list) developer.android.com
• Android Developers, "CallRedirectionService" (the system role an app uses to modify or cancel outgoing calls) developer.android.com
• Google For Families Help, "Set up your child's contacts" (Family Link call and text limits; Android 14 and up; applies to Google Messages and Google's dialer; emergency services not affected) support.google.com
• Apple, iPhone User Guide, "Choose who you can communicate with at certain times with Screen Time on iPhone" (Communication Limits steps and behavior) support.apple.com
• Apple, Mac User Guide, "Change Communication Limits settings in Screen Time on Mac" (communication to known emergency numbers is always allowed) support.apple.com
• Samsung Support (Ireland), "How to turn on or hide your caller ID" (Supplementary services → Show your caller ID) samsung.com
• Verizon Support, "How to block your number & block Caller ID FAQs" (*67 per call; not for 800 numbers and 911) verizon.com
• AT&T Support, "Block Caller ID" (*67 per call; not for toll-free numbers or 911) att.com
• Vodafone Australia, "Managing Caller ID Settings" (#31# for one call; texts still show your number) vodafone.com.au
• Our own check on a Google Pixel 8a (Android, September 2026): the Call barring entry under Phone → Settings → Calling accounts appears only while the SIM's mobile data is on.

Operators change their defaults and phone makers rename menus. Check your operator's or phone maker's help pages if a step does not match what you see.