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Changed number - text issues

Maskerade
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We changed my husband's number through o2 customer services. They warned us that for 24 hours the old one could still work to contact him. More than 3 days later and someone we didn't give the new number to has been able to text him via his old number. How is this possible and how do we stop it? We've blocked that individual but there will be others
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MI5
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@Maskerade 

Settings >Messages >Send and receive and untick the old number.

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)

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MI5
Level 94: Supreme
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@Maskerade 

Is it an iPhone?

If so, the old number will need removing from iCloud.

Otherwise, have you rebooted the phone?

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)
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Maskerade
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Hi, it is an iphone. Thank you, I'll try and work out how to do that
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MI5
Level 94: Supreme
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Registered:

@Maskerade 

Settings >Messages >Send and receive and untick the old number.

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)
Message 4 of 5
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MI5
Level 94: Supreme
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  • 27490 Solutions
Registered:
Also, Settings, tap the name at the top, names, phone number and email.
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)
Message 5 of 5
432 Views