Can I block outgoing calls at night on Android without an app?

No. Do Not Disturb, Bedtime mode and Focus mode run on schedules but do not stop you dialing out. Call barring and Fixed Dialing Numbers stop outgoing calls but have no schedule, so you would have to switch them on and off by hand every day.

Does Do Not Disturb stop me from making calls?

No. Google describes it as a way to silence your device and manage when you are notified: it affects calls, messages and notifications coming in. You can still place a call while it is on.

Can Focus mode block phone calls?

Focus mode pauses the apps you choose and hides their notifications on a schedule. Google's help page does not describe it as a call-blocking feature, and it works on whole apps rather than on numbers. It is not designed for blocking calls to a specific number.

Can I block a number only during work hours, or only on weekends?

Yes, with a per-number blocker. In NoDial, choose Set specific hours for the number, enter a start and end time, and pick the days. Calls inside the window are blocked; outside it they go through.

What if my window runs past midnight, like 10 p.m. to 7 a.m.?

NoDial has an Until the next day (overnight) option for exactly this. Select the days on which the window starts, and it carries over into the following morning.

Can I turn the schedule off quickly if I need to?

Turning blocking on is immediate. Unblocking a number, or turning off the all-calls block, takes effect one hour later, and you can cancel during that hour. Emergency numbers are never blocked regardless of the schedule.

How to Block Outgoing Calls Only at Night or During Certain Hours on Android (2026)

NoDial Editorial ／ 2026-09-22

Sometimes a number is fine to call at two in the afternoon and not fine to call at two in the morning. Or a phone should be able to make calls all day except during working hours, or a class, or a shift. Android has several features that run on a schedule, and it is natural to assume one of them covers this. None of them does. Do Not Disturb, Bedtime mode and Focus mode all switch on and off at set times, but they manage what reaches you and which apps you can open, not which numbers you can dial. This guide goes through each built-in schedule, shows exactly what it controls, explains why the two carrier and SIM tools have no timer at all, and then walks through the one way to block outgoing calls only inside the hours you choose.

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

1. The short answer

Stock Android has no schedule for outgoing calls. Its scheduled features are built for a different job:

Do Not Disturb silences incoming calls, messages and notifications on a schedule. You can still dial out while it is on.
Bedtime mode dims the screen, turns it grayscale and can switch on Do Not Disturb at set times. It does not touch the dialer.
Focus mode pauses the apps you pick on a schedule and hides their notifications. Google's help page does not describe it as a call-blocking feature, and it is not designed for one.
Call barring and Fixed Dialing Numbers can block outgoing calls, but both are simply on or off. There is no clock attached to either.

To block outgoing calls only at night, only during work hours, or only on certain days, you need an app that sits on the outgoing side and checks the time before the call connects. NoDial does this per number, and on its Premium Unlimited plan for every outgoing call at once.

KEY POINT

"Scheduled" on Android has always meant scheduled quiet: fewer interruptions coming in, fewer apps opening. Nothing built in schedules the calls going out. That is the gap this guide fills.

2. What Android's built-in schedules actually control

Do Not Disturb

Do Not Disturb is the scheduled feature most people already know. According to Google's own description, it exists to "silence your device and to manage when and how you want to be notified": when it is on, your phone "won't vibrate or make sounds when you get a call, message, or notification." You can turn it on for a set duration from Quick Settings, or let it switch on automatically inside a Bedtime routine with a start and end time. Every one of those controls is about what arrives. Do Not Disturb is built around what reaches you: Google describes it as silencing calls, messages, and notifications, and it has no setting that stops you from dialing.

Bedtime mode

Bedtime mode, part of Digital Wellbeing, is a schedule for winding down. You set the start and end times of your sleep and the days of the week, or tie it to charging, and at those times the screen can go grayscale, dim, and switch to a dark theme. It can also turn on Do Not Disturb for you. Google's help page for Bedtime mode does not mention phone calls at all, and there is no setting in it that affects dialing.

Focus mode

Focus mode is the closest thing Android has to a scheduled block, so it deserves a careful description. You choose apps to pause; when Focus mode is on, "you can't use these apps and won't get notifications from them," and you can set a schedule so it turns on automatically. It is designed to keep you out of distracting apps for a stretch of time. Google's documentation does not present it as a way to block calls, and it is not built for that: it works at the level of whole apps, not numbers, so it has no notion of which number you are calling. If what you want is "no calls to this number after 10 p.m.", Focus mode is not designed for the job.

WHAT THEY HAVE IN COMMON

All three are schedules for incoming interruptions and app access. None has a setting that reads "block outgoing calls between these hours." That is not a missing toggle you have overlooked; it does not exist.

3. Why call barring and Fixed Dialing Numbers have no timer

The two built-in tools that genuinely stop outgoing calls both live outside the phone's software. Call barring runs on your mobile operator's network: you switch on "All outgoing calls" (or "International calls") with a four-digit barring password, and the network refuses every call in that category until you switch it off. Fixed Dialing Numbers lives on the SIM card: with FDN on, the phone can only call numbers on a short approved list, protected by PIN2.

Because the rule is stored on the network or on the SIM, neither of them knows what time it is on your phone. There is no "from 22:00 to 07:00" field in a barring request and none in the FDN list. If you want either of them to apply only at night, the only way is to turn it on every evening and off every morning by hand, typing the password or PIN2 each time. That is workable for a week and abandoned by the second. The mechanics of each, and what they are good for, are covered in our guides to call barring on Android and Fixed Dialing Numbers; for the all-calls version, see how to block all outgoing calls on Android.

4. Blocking one number only during set hours

The one place a time-of-day rule can live is on the phone itself, in an app that Android lets inspect each outgoing call at the moment you place it. Android provides a system role for exactly this, and an app holding it can end a call before it connects. How that role works and what to look for in an app is explained in our guide to outgoing call blocker apps on Android.

NoDial is built on that role and adds the clock. For each number you register, you choose how to block it:

Always blocking — every call to the number ends the moment you dial.
Set specific hours — the number is blocked only on the days and hours you set. Outside that window, calls to it go through normally. You pick a start time, an end time, and the days of the week; a window can run past midnight into the next day.
Limit calls — a set number of calls per day, week, or month, then blocked. This is the "how often" version of the same idea; the limit is explained in our guide to limiting how often you call a number, and the per-number options are compared in how to block outgoing calls to a specific number.

Setting it up is the ordinary Android flow: install NoDial, grant it the call-handling role once, add the number, choose "Set specific hours", and enter the window. From then on, a call to that number inside the window ends before it rings, and the same call outside the window connects as usual. Your contacts are untouched, incoming calls are untouched, and emergency numbers can never be added to the list.

Two details matter for the night-time case in particular. First, the window is checked on the phone's own clock, the local time the phone shows, not on a server. Second, unblocking is deliberately slow: turning blocking back on for a number is immediate, but switching it off takes effect one hour later, and you can cancel during that hour. If the reason you set a night-time rule is that you do not trust yourself at night, that hour is the part doing the work.

WHY PER-NUMBER SCHEDULES FIT

Most people who search for "block calls at night" do not want a phone that cannot call anyone after dark. They want one or two numbers that are off-limits after a certain hour, while the phone stays a phone. A rule attached to the number, not to the whole device, is what matches that.

5. Blocking every outgoing call during set hours

The other search intent is the whole phone: no calls out during study hours, during a shift, or during a set evening window. NoDial's Premium Unlimited plan adds a Block all outgoing calls switch on the home screen, and it has the same time-window option. In its set-hours mode the app shows a status line that reads either "Blocking now (until …)" or "Outside these hours (blocks from …)", so you always know which state you are in. While it is active, every outgoing call is blocked, not just your list; outside the hours, calls go through and your per-number rules apply as usual.

Emergency calls are never blocked in any mode. Turning the all-calls block off takes effect one hour later, with a countdown you can cancel, and your number list applies again once it ends. The full walkthrough of this feature, alongside the four other ways to stop a phone making calls, is in how to block all outgoing calls on Android.

6. Three worked examples

Example 1 — one number, off-limits late at night

You have decided that a particular number should not be called between 22:00 and 07:00. In NoDial: add the number, choose "Set specific hours", set start 22:00 and end 07:00, tick "Until the next day (overnight)", and select all seven days. During the day the number behaves normally. At 22:00 the rule switches on; at 07:00 it switches off. If you dial the number at 01:00, the call ends before it connects and you see the block.

Example 2 — one number, only outside working hours

You want the opposite: the number is fine in the evening but should not be called during the working day. Set start 09:00, end 18:00, Monday to Friday, no overnight. Calls at 12:30 on a Tuesday are blocked; calls at 19:00, or any time on Saturday, go through.

Example 3 — the whole phone, no calls during a set window

You want the phone itself to make no calls between 20:00 and 06:00, every day. On the Premium Unlimited plan, turn on Block all outgoing calls, pick the set-hours mode, and enter the window. Every outgoing call in that window is blocked; emergency numbers still work. In the morning the status line reads "Outside these hours (blocks from 20:00)" and the phone is back to normal.

7. Side-by-side comparison

	Do Not Disturb	Bedtime mode	Focus mode	Call barring	FDN	NoDial (per number or all calls)
Runs on a schedule	Yes	Yes	Yes	No	No	Yes: days and hours
What it controls	Incoming sounds and notifications	Screen, theme, Do Not Disturb	Access to chosen apps	Outgoing calls by category	Outgoing calls to an allow-list	Outgoing calls to chosen numbers, or all
Stops you dialing out	No	No	Not designed for it	Yes, while on	Yes, while on	Yes, inside the window
Per-number rule	No	No	No	No	Not practically	Yes
Overnight window	Yes	Yes	Scheduled, hours not stated	—	—	Yes
Code or password	None	None	None	Barring password	PIN2	None
Turning it off	Instant	Instant	Instant	Instant with password	Instant with PIN2	Takes effect one hour later

8. What happens at the edges: overnight, weekends, turning it off

Windows that cross midnight. A rule like 22:00 to 07:00 is one window, not two. In NoDial you tick "Until the next day (overnight)" and pick the days on which the window starts. A Friday-only overnight rule runs from Friday 22:00 to Saturday 07:00.
Weekends. Days are chosen individually, so "Saturday and Sunday only" or "weekdays only" are both one rule. The app requires at least one day.
The boundary minute. The window includes its start time and stops just before its end time: a 22:00 to 07:00 rule blocks a call at exactly 22:00 and allows one at exactly 07:00.
Changing your mind. Blocking again is immediate. Unblocking a number, or turning off the all-calls block, takes effect one hour later, and you can cancel the change during that hour. Changing the hours of a rule you keep is a normal edit.
Emergency numbers. They cannot be added to the list and are never blocked, in any mode or window.

If the number you are scheduling is one you keep calling on impulse, the schedule is only half of it. The other half, from writing the rule down to what to do with the urge, is in how to stop yourself from calling someone.

9. FAQ

Can I block outgoing calls at night on Android without an app?: No. Do Not Disturb, Bedtime mode and Focus mode run on schedules but do not stop you dialing out. Call barring and Fixed Dialing Numbers stop outgoing calls but have no schedule, so you would have to switch them on and off by hand every day.
Does Do Not Disturb stop me from making calls?: No. Google describes it as a way to silence your device and manage when you are notified: it affects calls, messages and notifications coming in. You can still place a call while it is on.
Can Focus mode block phone calls?: Focus mode pauses the apps you choose and hides their notifications on a schedule. Google's help page does not describe it as a call-blocking feature, and it works on whole apps rather than on numbers. It is not designed for blocking calls to a specific number.
Can I block a number only during work hours, or only on weekends?: Yes, with a per-number blocker. In NoDial, choose "Set specific hours" for the number, enter a start and end time, and pick the days. Calls inside the window are blocked; outside it they go through.
What if my window runs past midnight, like 10 p.m. to 7 a.m.?: NoDial has an "Until the next day (overnight)" option for exactly this. Select the days on which the window starts, and it carries over into the following morning.
Can I turn the schedule off quickly if I need to?: Turning blocking on is immediate. Unblocking a number, or turning off the all-calls block, takes effect one hour later, and you can cancel during that hour. Emergency numbers are never blocked regardless of the schedule.

10. Summary

SUMMARY

Android's scheduled features manage what comes in and which apps open; none of them schedules outgoing calls. Call barring and FDN can block calls but have no timer. To block outgoing calls only at night, during work hours, or on certain days, use a per-number blocker with a time window, and the same window applied to all calls if you need the whole phone quiet.

Do Not Disturb, Bedtime mode and Focus mode are schedules for incoming interruptions and app access, not for dialing out.
Call barring (network) and Fixed Dialing Numbers (SIM) stop outgoing calls but are only on or off, with no clock.
NoDial blocks a number only on the days and hours you set, with overnight windows, and can do the same for every outgoing call on Premium Unlimited.
Unblocking takes effect one hour later on purpose. Emergency calls are never blocked. First number free.

NoDial — block a number only when it mattersSet the days and hours. Outside them, your phone is just a phone. First number free.

Sources

Google Android Help, "Limit interruptions with Modes & Do Not Disturb on Android" (what it silences; schedules and durations) support.google.com
Google Android Help, "Manage how you spend time on your Android phone with Digital Wellbeing" (Bedtime mode and Focus mode: what they change, scheduling) support.google.com
ETSI, GSM 03.88 "Call Barring (CB) supplementary services – Stage 2" (barring is a network service by category) etsi.org
Wikipedia, "Fixed Dialing Number" (SIM-based allow-list protected by PIN2) en.wikipedia.org
Android Developers, "CallRedirectionService" (the system role an app uses to modify or cancel outgoing calls) developer.android.com

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