If you miss a call, the O2 Call Alert service will:

  • Send you a text with the caller's number and the time they called
  • Play callers a message telling them that their number is being sent to you via text
  • Tell anyone who withholds their number to call again later – you won't get a text

Getting O2 Call Alert

You can turn O2 Call Alert on or off any time by calling 1710 free from your mobile.

Voicemail 901

You can't use Voicemail 901 and O2 Call Alert at the same time – using one cancels the other.


If you have O2 Call Alert enabled it's free to receive the text update, whether you're in the UK or abroad.

If you're calling someone with O2 Call Alert you'll be charged your standard rate.

If you're not sure about any techy terms, check out our jargon buster

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