SMS shortcodes: What you need to know
What are SMS shortcodes?
SMS shortcodes are short phone numbers, usually 5 or 6 digits, used to send and receive text messages. Companies use them to send alerts, promotional offers, or verification codes. For example, you might receive a message from a shortcode like “12345” asking you to confirm your account or offering a discount.
How to stop SMS shortcodes
If you want to stop receiving messages from SMS shortcodes, here’s how:
- Reply “STOP”: Most shortcodes let you opt out by replying with “STOP.” This should immediately stop future messages.
- Block the number: Use your phone’s settings to block the shortcode, just like you would block any other number.
- Be careful where you sign up: Avoid sharing your phone number online or in stores to minimize unwanted messages.
Allowing SMS shortcodes
Some services require you to explicitly allow messages. To do this:
- Open your messaging app.
- Send the word “ALLOW” to the shortcode (e.g., “12345”).
- Wait for confirmation or retry the action that prompted the shortcode message.
Troubleshooting shortcodes
If you aren’t receiving messages from a shortcode you need, here’s what to check:
1. Make sure the shortcode Isn’t blocked
Android
- Open the Messages app.
- Tap the three dots (⋮) or More Options in the top-right corner.
- Go to Settings.
- Tap Blocked Numbers.
- Look for the shortcode (e.g., “12345”) and unblock it.
iPhone
- Open the Settings app.
- Navigate to Messages.
- Tap Blocked Contacts.
- Find the shortcode and swipe left to unblock it.
2. Check your phone’s settings
iPhone
- Go to Settings.
- Tap Messages.
- Make sure Send as SMS is enabled.
- Check if Filter Unknown Senders is on. If it is, messages from shortcodes might appear in the Unknown Senders tab.
3. Verify the shortcode
Double-check that the company is using the correct shortcode. Mistyped numbers can cause issues.
Tips to manage shortcodes
- Be cautious: Avoid responding to unknown shortcodes asking for personal information or money—they could be scams.
- Save trusted shortcodes: If you frequently interact with certain shortcodes, save them in your contacts for quick recognition.
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