How to stop spam texts and robocalls on Android

Scam texts and robocalls have one weakness: a handful of settings already on your Android phone stop most of them, and reporting the rest makes the filters smarter for everyone. The fastest move when a junk text lands is to not tap anything, block the sender, and forward the message to 7726 — the free short code (it spells SPAM on the keypad) that the major U.S. carriers read to catch similar messages. Everything below builds on that, and you can get through the whole checklist in about ten minutes.

Block and report a spam text#

When an obvious spam text arrives, the Federal Trade Commission’s advice comes down to three quick steps, and none of them involves replying.

1. Report it in your messaging app. In Google Messages, touch and hold the conversation, then tap Block and choose to report spam. That blocks the sender and moves the thread to a “Spam & blocked” folder; reporting the message to Google is optional but helps its detection. Samsung Messages and most other apps have an equivalent “Block / report spam” option.
2. Forward the message to 7726. Copy the text and send it to 7726 so your wireless provider can spot and block messages like it. The short code is free and works across the major carriers.
3. Report it to the FTC. File it at ReportFraud.ftc.gov, which is how the agency tracks scam trends. The FTC lays out these same steps in its guide to recognizing and reporting spam text messages.

Never tap the link — and don’t reply “STOP” either#

Two habits protect you more than any setting. First, never tap a link in an unexpected text. A link can lead to a spoofed page that looks like your bank or a delivery service — something like usps-redelivery.example — and any password you type there goes straight to the sender. Second, don’t reply at all, not even “STOP.” The STOP keyword is meant for marketing lists you actually joined; on a message from an unknown sender it does the opposite of what you want, because replying tells the scammer a real person is reading. Block and report instead.

These are the same instincts that help you spot a phishing email: unexpected sender, manufactured urgency, and a link that wants your login or your money.

Red flag in the text	What a legitimate message looks like
Arrives out of the blue from a number or address you don’t recognize	Companies usually text from a short code you signed up with
Pushes urgency — “act now,” “account suspended,” “final notice”	Real notices give you time and a normal way to respond
Asks you to tap a link to verify, log in, or pay	A real company points you to its official app or website
Dangles a prize, refund, or gift card you never entered for	If it sounds too good to be true, it is
Uses a look-alike or shortened web address	Official links use the company’s real domain
A “wrong number” hello that turns chatty, or a text from your own number	Legitimate senders identify themselves and their business

Turn on your phone’s built-in spam filter#

Android’s own caller ID and spam protection catches a large share of junk calls before they ring. The menus differ by phone, so treat these as a guide rather than an exact map.

• Phone by Google (Pixel and many other phones): open the Phone app, tap the three-dot menu, then Settings > Caller ID & spam. Make sure See caller ID & spam is on — it usually is by default — and turn on Filter spam calls. Filtered calls skip the ring and go quietly into your call history, where you can still review them.
• Samsung Galaxy: open the Phone app, tap the three-dot menu, then Settings > Caller ID and spam protection, and switch it on. Samsung lets you block all spam and scam calls or only the high-risk ones. The service is powered by Hiya and may not be offered on every carrier or model.
• Google Messages spam protection is on automatically. You can confirm it under your profile picture, then Messages settings > Protection & Safety > Spam protection.

Silence unknown callers#

If robocalls still slip through, tighten the net. In the Phone app, open the three-dot menu, then look under Settings > Blocked numbers for the option to block calls from unknown or unidentified callers. This silences callers who hide their number, while people in your contacts still ring through. It is a good switch to flip on a heavy spam day, since real callers rarely withhold their number.

Action	What it does	When to use it
Block a number	Stops that one number from reaching you again	A specific spammer or scammer you can name
Report spam (in the app, to 7726, to the FTC)	Feeds the filters so similar junk is caught for everyone	Every obvious scam text — this is the part that scales
Filter spam calls	Sends suspected spam calls to your call history without ringing	Leave it on; it is the baseline for calls
Silence unknown callers	Stops calls that hide their number from ringing you	Bad robocall stretches, when you expect no hidden-number calls

Turn on your carrier’s free call protection#

Each major U.S. carrier blocks and labels a lot of junk at the network level, before it ever reaches your phone, and the basic tier costs nothing. Availability depends on your plan and device, and the paid upgrades mostly add extras you can skip. Look for the app in the Play Store or in your carrier’s account settings.

Carrier	Free tool	What the free tier does
AT&T	ActiveArmor	Automatic fraud-call blocking and suspected-spam warnings at the network level; the app adds spam-text filtering and blocking controls
T-Mobile / Metro	Scam Shield	Flags likely scams as “Scam Likely” and can auto-block them with Scam Block, plus caller ID
Verizon	Call Filter	Labels calls “Potential Spam,” sends high-risk spam to voicemail, and lets you report numbers it missed

The FCC’s guide to stopping unwanted robocalls and texts is a good reference if you want to compare these tools or file a complaint about a persistent caller.

Register with the Do Not Call Registry — and know its limits#

Registering is free and worth doing, but be clear about what it is. Add your number at the National Do Not Call Registry, or call 1-888-382-1222 from the phone you want to register. Registration never expires; your number stays on the list until you ask to remove it or the line is disconnected and reassigned.

What it does: it tells legitimate telemarketers to leave you alone. Sales calls can take up to 31 days to taper off. What it does not do: it does not block calls, and it does nothing about scammers and illegal robocalls, who already ignore the law. Think of the registry as the floor. The built-in spam filter and your carrier’s tool are what actually cut the volume down.

Keep it quiet over time#

The routine that lasts is short: leave caller ID and spam protection on, enroll in your carrier’s free tool once, and for each scam text, block, report, and forward to 7726 without engaging. If a link ever did get tapped, treat it seriously — change the exposed password and watch the account — and know that a recent backup of your files turns a bad day into an inconvenience rather than a loss. While you are in Settings tidying up, it is also a fine moment to free up storage on Android by clearing out the apps you no longer use.