Call barring on Android restricts incoming or outgoing cellular calls through your carrier. On a supported Galaxy, use Phone > Settings > Supplementary services > Call barring, select the SIM, then enable the restriction.
For one unwanted caller, use number blocking instead. For an hour without interruptions, use Do Not Disturb. Neither blocking a number nor silencing the phone creates a carrier restriction on outgoing calls.
In this guide
Choose the restriction before opening the menu
Decide whether you're stopping incoming calls, outgoing calls, or calls while roaming. An incoming restriction stops calls reaching your number. An outgoing restriction stops calls made from that line.
Dual-SIM phones can apply restrictions separately to their two lines. Note the carrier and line label you want to change before starting. Barring a work SIM doesn't automatically apply the same setting to the personal SIM beside it.
The carrier, plan, phone, and software determine whether barring is available. If the menu is missing, you may need your provider's help or account controls rather than another Android settings page.
Samsung's call barring instructions describe the Galaxy route and its carrier limits. Check those limits before looking for an app that promises to unlock the service.
Enable call barring in Samsung Phone
Open the Phone app you normally use for cellular calls. In Samsung Phone, tap the three-dot menu, choose Settings, then Supplementary services. Some versions call this area Call settings.
Choose Call barring or Call barring settings. On a dual-SIM phone, select SIM1 or SIM2 when prompted. If Voice calls appears, select it to reach the voice-call restrictions.
Read each option before turning it on. Depending on your service, you may see all incoming calls, all outgoing calls, incoming calls while roaming, or specific outgoing categories such as international calls.
Don't expect every option on every carrier. Use only the restriction actually shown and supported on your line. A guide for another region can show choices your network doesn't provide.
Enter the barring password when asked, then confirm the switch or activation prompt. Wait for the network's response. Reopen that line's barring page and check that the option stayed on. The network must accept the change for it to work.
To check an incoming restriction, ask someone you know to call that number after activation. To check an outgoing restriction, try an ordinary number it should allow or block, choosing one that won't bring unexpected charges.
I'd change one restriction at a time. That makes it much easier to tell whether you changed the right line and category, especially with separate work and personal numbers on your phone.
Get the barring password from the carrier
The call barring password isn't necessarily your screen-lock code, voicemail PIN, SIM PIN, or account sign-in password. They protect different services, even when the codes have the same number of digits.
The instructions list 0000 as a possible default, but the correct password depends on your provider. Ask the carrier to confirm or reset its call barring password instead of repeatedly trying familiar PINs.
Don't keep guessing if a password is rejected. Tell support which restriction you tried and include the full error message. The request can fail because of the password, an unsupported service, or the SIM selected on the phone.
Fixed dialing numbers, sometimes labeled FDN, is another feature. It limits outgoing calls to a list you set up and uses a carrier-provided PIN2. It isn't the same control as call barring, so don't enter PIN2 into an unrelated prompt.
If the goal is to prevent premium-rate or international charges, ask the carrier which account-level restriction covers those charges on your plan. A phone setting with an unclear name may not block the charges you meant to prevent.
Ask the carrier when Android has no barring menu
Phone by Google and Samsung Phone don't have identical menus. A Galaxy using a different dialer may therefore lack the Samsung route, and a Pixel won't necessarily have the same controls.
Open the calling app's settings and check the options available for your carrier account. If the call barring control is absent, ask your carrier whether network call barring is supported and how to activate it for your specific number.
Tell support your phone model, Android version, calling app, and whether you're using a SIM or eSIM. Ask for the exact supported method and the correct password, rather than trying dial codes copied from a different country's provider.
There isn't one dial code you can rely on for call barring across Android phones. A carrier may provide service codes, but use its own instructions for your line and chosen restriction.
Call forwarding is separate too: it redirects calls rather than barring them. If calls are reaching another number, check the Android forwarding settings instead of enabling a second service to hide the symptom.
Block an unwanted number without barring the whole line
In Phone by Google, open the recent call or Call history, select the unwanted number, and choose Block / report spam. Confirm the block. This blocks that caller instead of a whole category of cellular calls.
For private or unidentified callers, open Phone > Settings > Blocked numbers and check Unknown. Google's number-blocking instructions explain that this means private or unidentified numbers, not every number missing from Contacts.
For broader nuisance calls, use the Android spam-call controls. Those filters help screen unwanted callers; they don't block all outgoing or international calls through your carrier.
Use Do Not Disturb to let calls reach your phone without interrupting you. Check which callers it allows before using it for a quiet period. It silences interruptions rather than stopping the carrier from connecting calls.
Remove a restriction or fix a rejected request
To undo a Galaxy barring choice, return to the same Call barring screen for the same SIM and disable that option. Enter the barring password if asked. Wait for confirmation and check whether ordinary calling works again.
If a change is rejected, check that the intended SIM has service. Give the carrier the exact message, including any rejected-request wording, and request a check of that number's network restriction.
Your carrier can check whether the service is active even if the phone can't show its status. If calls stay barred after the carrier removes a restriction, ask whether their network change has finished before resetting the phone.
On a work phone, ask your administrator for help if company rules control calling. Resetting the phone before the carrier checks its service can erase your setup while leaving the network restriction active.
The Short Version
Choose the SIM and category for carrier call barring. Ask the provider for its password and activation method when needed. Individual callers need blocking, nuisance calls need filtering, and a quiet period needs Do Not Disturb.
Checked November 12, 2026.
