How to Turn Off Message Blocking on Android (2026 Guide)

Message blocking on Android can mean an intentional blocked number, an automatic spam folder, a carrier junk filter, or a third-party call/SMS blocker. Turning blocking “off” means finding which layer is hiding the texts — then unblocking people you want while keeping real spam under control.

This guide focuses on Google Messages and common OEM SMS apps, plus the notification checks people skip after they unblock someone.

Where Android hides blocked and spam texts

Layer	Where to look	Effect
Blocked contacts	Messages → Spam & blocked	Sender cannot thread normally; often no notification
Spam folder	Messages → Spam	Messages quarantined; may still be readable
Phone app block list	Phone → Settings → Blocked numbers	Often shared with SMS on the same device
Third-party blocker	Apps like carrier “nuisance” tools	Can intercept before Messages shows a bubble
Muted conversation	Thread mute	Not a block, but feels like one

Unblocking in one place but not another is why people say “I turned off blocking” and still see nothing.

Unblock numbers in Google Messages

1. Open Messages.
2. Tap your profile photo or menu → Spam & blocked (labels vary slightly).
3. Open Blocked contacts.
4. Select a number → Unblock.
5. Check Spam for misfiled threads → open → Not spam.
6. Ask the person to text again.

From a known conversation you can also open the people & options menu and confirm Block is not enabled for that contact.

Samsung Messages and other OEM apps

Samsung Messages

1. Messages → menu → Settings.
2. Open Block numbers and spam / Spam filter.
3. Remove numbers from the block list.
4. Disable or reduce Spam filter if bank/school short codes keep landing in spam.
5. Confirm Samsung Messages is still your default SMS app if you use it.

Other OEMs

Look for Blocked, Blacklist, or Harassment filter in the SMS app settings. Chinese-market skins sometimes add secondary “smart filter” menus — disable those if legitimate SMS vanishes.

Turn down automatic spam protection (without inviting junk)

Google Messages includes spam protection that uses Google’s classifiers (and optional report-to-Google features).

Do

• Open Messages settings → Spam protection / Message organization
• Turn protection off temporarily to test whether a sender is misclassified
• Mark good messages as Not spam so the model learns
• Keep unknown preview disabled if you worry about scam links

Do not

• Leave every unknown short code untrusted forever if you need 2FA SMS
• Install five different blocker apps that fight each other
• Assume spam protection is malware — it is a filter

If picture messages fail while texts arrive, that is usually MMS/RCS configuration, not a block list — see why can’t I send picture messages on my Android and the package context in what is com.android.mms.

Phone app block lists and third-party filters

1. Open the Phone dialer → Settings → Blocked numbers.
2. Remove entries that should be allowed to SMS you.
3. Settings → Apps → see recently used call filter / junk apps → disable or uninstall.
4. Carrier apps (for example network-branded spam blockers) often have their own allowlists — add the sender or turn the feature off for a test week.

Work profiles can maintain a separate block list. Switch to the personal profile when testing personal SMS.

After unblocking: make sure texts actually notify you

A message can arrive while the phone stays silent:

• Conversation still muted
• Messages notification channel set to silent
• Do Not Disturb exceptions missing SMS
• Default SMS app switched to one you never open

If delivery works but alerts do not, follow why is my phone not notifying me of text messages after you finish unblock steps.

Blocking vs permissions vs “Messages not allowed”

Rare confusion cases:

Symptom	Real cause
No SMS app can receive	Wrong default SMS app or permission revoked
Only group MMS fails	MMS/group settings, not block list
Only one contact fails	Still blocked/spam or muted
Everything fails after “cleaner” app	Notification or SMS role broken

Avoid “SMS booster” utilities. Prefer the default Messages roles and OS settings.

Keep spam control without losing real people

Practical balance:

1. Unblock family, schools, delivery, and banks you recognize.
2. Leave obvious scam numbers blocked.
3. Use spam folder review once a week instead of turning all protection off forever.
4. Never reply STOP to phishing threads that are not true carrier short codes you opted into.
5. If kids keep blocking teachers or relatives for fun, restrict settings with how to lock settings on Android.

Test plan

1. Unblock the sender in Messages and Phone.
2. Mark related threads Not spam.
3. Disable third-party blockers temporarily.
4. Send a test SMS from that number.
5. Confirm banner + sound.
6. Re-enable mild spam protection if the test succeeds.

Short codes, banks, and two-factor SMS

Many “blocked” complaints are actually spam filters catching short codes. After you loosen protection:

1. Search Spam for the bank or delivery sender.
2. Open the thread → Not spam.
3. Star or pin the conversation if your app allows it.
4. Avoid reporting legitimate 2FA senders as spam “to be safe” — that trains the filter the wrong way.

If a short code never arrives in Spam or Inbox, the carrier may be filtering upstream. Contact the carrier with the sender ID; app-level unblock cannot override a network block.

RCS chat features vs SMS blocking

Google Messages chat features (RCS) can show a sender as stuck on “Verifying” or fall back to SMS. That is not the same as a blocked number, but it can delay or split threads so it feels like blocking. Toggle chat features off and on after you unblock, or wait for SMS fallback, before assuming the number is still barred.

Group chats with one blocked participant can also behave oddly: unblocking the person and recreating the group is sometimes cleaner than debugging a half-blocked thread.

Quick reference

Goal	Action
Allow a person again	Unblock in Messages + Phone
Stop auto-quarantine	Loosen spam protection; mark Not spam
Silent but delivered	Fix notifications / unmute thread
MMS-only failure	MMS/RCS guide, not block list
Blocks return overnight	Shared user — lock settings
Short code missing	Check Spam + carrier filter

Bottom line

To turn off message blocking on Android, clear Blocked lists in Messages and the Phone app, rescue false positives from Spam, and dial back aggressive filters or third-party blockers. Then verify notifications so unblocked senders both arrive and alert — blocking is a filter stack, not a single mysterious switch.