Can an update guarantee Truecaller will block every unwanted call?

No. Caller identification and blocking can vary by number type, carrier, region, Android version, and the information available for that caller. A current build and correct settings improve normal screening, but cannot guarantee that every unwanted call is identified or blocked.

Truecaller Call Blocking Not Working on Android? Update Fix (2026)

Q: Why did Truecaller stop blocking calls?

An old app build, disabled Caller ID & spam role, changed block settings, missing phone permission, battery restrictions, or an incomplete update can stop Truecaller from screening calls. Start by updating to a current compatible build, then recheck the Android role and in-app block controls.

Q: Does Truecaller need to be the default Caller ID and spam app?

On Android versions that expose the Caller ID & spam role, Truecaller needs that role enabled to identify and screen calls consistently. The exact menu name varies by phone brand, but it is usually under Settings, Apps, Default apps, or Caller ID & spam.

Q: Why does Truecaller identify a caller but not block it?

Caller identification and automatic blocking are separate controls. Check Truecaller's block settings, confirm the number category is selected for blocking, and make sure Android has not removed the app's phone permissions or background access.

If Truecaller is no longer blocking calls, an old build may still open and identify some callers while its automatic screening no longer behaves as expected. That does not always mean the app is broken: Android can remove the Caller ID & spam role after an update, reset a permission, or limit the app in the background.

The reliable first move is to update to a current compatible build, then check the Android role and Truecaller’s own block controls. This guide focuses on that order so you do not spend time clearing data or changing unrelated phone settings first.

A current build can improve normal call screening, but it cannot promise that every unwanted call will be recognized or blocked. Results can vary by caller number, carrier, region, Android version, and the information available for that number.

Update an Older Build Before Changing Settings

Use this when: Truecaller worked before, but recently stopped filtering or blocking calls after a phone, app, or service update.

Clean update path

Open the current Truecaller listing on MODDROID and compare its version with the one on your phone.
Back up anything you need from the existing install, such as a manually maintained block list.
If Android reports a signature or package conflict, uninstall the conflicting build first rather than repeatedly retrying the update.
Restart the phone once, install the current build, then open Truecaller before testing a call.

Tip: Do not mix several old APKs from different release sources. A clean install is more predictable than layering a newer file over an incompatible build.

Restore the Caller ID & Spam Role

Problem: Truecaller opens normally, but incoming calls arrive without its usual screening or blocking behavior.

What to check

Open Android Settings and search for Caller ID & spam, Default apps, or Phone app.
Choose Truecaller if Android offers it as the Caller ID and spam app.
Open Truecaller again and accept any call-screening permission prompt that appears.
Place a test call from a known number or wait for the next normal incoming call to confirm the caller screen appears.

The exact menu changes between Samsung, Xiaomi, Pixel, OnePlus, and other Android skins. The goal is the same: Truecaller must retain the Android role that allows it to identify and screen incoming calls.

Check the In-App Block Controls

Problem: Truecaller identifies a caller, but the call is still allowed through.

Identification and automatic blocking are not always the same setting. A caller can be labeled or shown with a name without matching the currently enabled block rule.

Open Truecaller and find Block, Block settings, or Protection.
Confirm that automatic blocking is enabled for the call categories you actually want filtered.
Review your personal block list and remove an accidental allow-list entry if you use one.
Check whether a recent app update introduced a new confirmation screen or block category that is still off.

Tip: Test with a number you control. Do not use a one-off unknown call as the only test, because caller information can change between calls.

Recheck Phone, Contacts, and Notification Permissions

Problem: The app is installed and selected, but caller cards, call alerts, or block feedback are inconsistent.

Android permission checklist

Phone: required for normal call-related behavior.
Contacts: helps Truecaller match contacts and keep its caller experience consistent.
Notifications: allows visible call alerts and block confirmations on newer Android versions.
Display over other apps: may be needed by some device builds for a caller card to appear over the incoming-call screen.

Open Settings → Apps → Truecaller → Permissions and enable only the requested permissions you are comfortable granting. If Android revoked one after an update, return to the app and repeat its setup flow.

Remove Battery Restrictions That Stop Background Screening

Problem: Truecaller works immediately after opening it, then stops showing caller information or block feedback later in the day.

Some Android skins aggressively pause background apps. If Truecaller is restricted, it may not be ready when an incoming call arrives.

Open Settings → Apps → Truecaller → Battery.
Choose Unrestricted, Don’t optimize, or the closest available option while testing.
On phones with an Auto-start or Background activity setting, allow Truecaller to run in the background.
Restart the phone and test again without opening the app first.

If the issue only happens after several hours, this step is more useful than repeatedly clearing the app cache.

Know What an Update Can and Cannot Fix

Updating is the right fix when an old build no longer works correctly with current Android call-screening behavior. It can also restore redesigned block controls, compatibility fixes, and current caller-identification data.

It cannot guarantee the same result for every call. Some numbers may have limited available information, and different carriers, regions, caller types, or device settings can change what the app is able to show or block.

If Truecaller identifies calls again but does not automatically block the category you expected, review the Block settings first. If the app never appears at all, return to the Caller ID & spam role and battery checks.

FAQ

Why did Truecaller stop blocking calls?

Usually an old build, a disabled Android call-screening role, changed block controls, a missing permission, or battery restrictions. Update first, then recheck the role and settings.

Does Truecaller need to be the default Caller ID and spam app?

On Android versions that offer that role, yes—enable it so Truecaller can identify and screen calls consistently. The menu name differs by phone brand.

Why does Truecaller identify a caller but not block it?

Identification and automatic blocking are separate controls. Check the enabled block categories, phone permissions, and background access.

Can an update guarantee every unwanted call will be blocked?

No. Results depend on the number, carrier, region, Android version, and caller information available. A current build and correct settings improve normal screening but cannot guarantee every result.

Related guides

Ready to restore call screening? Check the current Truecaller build first.

Get Current Truecaller on MODDROID