spam sms

Block Spam SMS With No Number

‘Block’ Spam SMS With No Number

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This article describes how to ‘block’ spam SMS text messages that have a name instead of a number and is specific to smartphones that use the Android operating system.

Without installing any third-party apps, this guide shows the steps taken on a Samsung S8 smartphone to ‘block’ spam SMS messages that have no number, by constructing a filter to identify and capture them.

Samsung S8

It replaces an older article written for the Samsung S3 mobile phone: How To Block Text Message SMS Spam on Samsung Galaxy Phones (Android)


Smartphones that run on an Android operating system are capable of diverting spam SMS text messages to a spam folder, even if the telephone number is absent from the message or the telephone number has been replaced with a name. Although these messages are still received by your handset, the method of identifying and diverting spam in this way creates the illusion that the nuisance message has indeed been blocked.

To ‘block’ spam SMS text messages that have a name instead of a number, follow these simple steps:-

STEP 1: Open the Samsung Messages app.

Samsung S8 Messages App

STEP 2: Identify the spam SMS text message and tap it.

Identify Spam SMS

 

STEP 3: Take note of the keywords or phrases that are in every message received.

SPAM SMS Message – Note the Keywords

In this example, I use the name of the sender, LloydsBank and the word ENTRIES.

STEP 4: Go back to your list of messages by pressing the back arrow, top left.

STEP 5: Open message options by tapping the three dots at the top right of the screen

Message Options

STEP 6: From the options that appear, tap Settings.

STEP 7: Tap Block messages

Block messages

STEP 8: Tap Block phrases – Manage the phrases that will cause incoming messages to be blocked.

Block phrases

STEP 9: Enter the keywords or phrases noted in step 3.

Block keywords and phrases

Type a keyword or phrase then tap the plus (+) symbol to add it to the list. Remove a keyword or phrase by tapping the minus (-) symbol associated with that text.

As soon as a keyword or phrase is entered, then any new SMS message that contains that text will be diverted to the Blocked messages folder and effectively ‘blocked’.

It is important to note that:-

  • phrase matching is not case sensitive and all text entries are stored in lower case.
  • if a genuine SMS text message contains one of your chosen keywords or phrases, then that message will be ‘blocked’ too. It is therefore important to choose your keywords and phrases carefully.

STEP 10: You’re done!

Return to the Messages main list by tapping the back arrows on each of the option screens.

How to check Blocked messages

Once you have your keywords and phrases in place, it is worth checking your spam SMS folder occasionally to check its effectiveness.

Blocked messages

The Blocked messages list can be accessed from the Messages main conversation screen by tapping the three dots, top right, and selecting:-

Settings > Block messages > Blocked messages

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How To Block Text Message SMS Spam

How To Block Text Message SMS SPAM on Samsung Galaxy Phones (Android)

If you’ve started receiving SPAM SMS text messages purporting to be from LloydsBank, Sky or elsewhere, and you cannot report them as SPAM because of the invalid number error, there is a workaround to divert these messages to your existing SMS SPAM box without installing SPAM-catching applications.

I will show you how, using the LloydsBank SPAM SMS text message that has been plaguing me for a while.

Block Spam SMS With No Number is an updated guide for the Samsung S8 smartphone.

LloydsBank SMS SPAM Text Message

The LloydsBank SPAM SMS text message appears something like this in your SMS Inbox.

SPAM SMS from LloydsBank

LloydsBank SPAM SMS Text Message

If you Press and Hold the text message to bring up the options associated with it, you have the option to Delete the thread or Register as spam number.

Android Text Message SMS SPAM | Register as spam number

Register as spam number

Registering text messages as SPAM usually works to divert subsequent messages to your SPAM folder. Unfortunately though, spammers have become crafty and use alphanumeric strings or numbers that are too long to be recognized as telephone numbers in their transmissions. This results in the invalid number error when trying to register a number as SPAM. This means that marking that text as SPAM fails and you will continue to receive them in your SMS inbox.

How To Block Text Message SMS SPAM with Invalid Number Error

Open up a thread of the offending SPAM messages to identify a recurring keyword. In the example of the LloydsBank SPAM SMS, there are a few, namely;

  • A/C
  • Bal
  • CR
  • DR
  • Entries
Keywords in the LloydsBank SPAM SMS Text Message

LloydsBank SPAM SMS Text Message Thread

Return to your SMS text message Inbox and press the Menu button on your device.

Android Menu Button

Android Menu Button | Often Found On The Phone Itself (Bottom Left) Rather Than The Screen

This will display many options associated with your SMS text messages. Select Settings at the bottom of the list.

Android Text Message Option List

Select Settings From the Text Message SMS Options List

Scroll all the way to very bottom of the Settings page. Ensure the Spam settings option is ticked. Then, select Register phrase as spam.

Tip! You can also tick Block unknown senders so that you only receive SMS text messages from people on your contact list.

Spam Message Options - Android

Select Register phrase as spam & Ensure that the Spam settings Option is Ticked

Click the plus + icon to add one of the recurring phrases that you noted earlier. Then click Save.

Android SPAM SMS Text Message Keywords and Phrases to Block

SPAM Keywords and Phrases to Block

To block the LloydsBank SPAM SMS text message, I have used the word entries, but I could have used any of the others identified earlier.

It is important to note that:

  • phrase and word matches are not case sensitive
  • a genuine SMS text message could be diverted to your SPAM folder if it contains one of your entered words or phrases. So choose wisely.

Once you have set-up phrase blocking, it is worth checking your SPAM SMS folder occasionally to check it’s effectiveness. It can be accessed from your SMS text message Inbox screen and by pressing your device’s Menu button, then selecting SPAM messages.