I keep getting SMS spam from Three mobile and I'm looking for a way to block it. The problem is that the SMSes don't come from a regular number, it just says "From Three" but there's no associated phone number.

According to Ofcom I should be able to reply "STOP" but there's no reply option for this type of special SMSes.

Is there any way to block this type of spam?

(I'm on Android 6.0.1, Xperia Z5)

  • Call your operator and ask them to stop sending you SMS.
    – GiantTree
    Dec 14, 2016 at 18:05

2 Answers 2


I stopped this sort of spam from Three by forwarding every text I received from them to their own spam reporting number, 37726.

You will get an automated reply asking for the number that sent you the text. As you don't get a number from the spam, just use Three's own marketing number, 0800 033 8002.

It didn't work immediately but they did take the hint after a couple of weeks.


You should to call them to ask an opt-out, it's an option you seem to be subscribed to.

Source: http://forums.whirlpool.net.au/archive/928273

Just call them and opt out of marketing.

It's in the customer terms that when you sign-up you opt in, which is odd. Most carriers ask or at the least assume you opt out by default.

Phone call should set you straight and stop the sms!

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