roaming messaging charges even though didnt message

[Hi2]

Hi

I am in abroad currently. And not using O2 SIM but using local SIM. But every now and then for every 2 or 3 days I keep O2 SIM( by keeping data roaming OFF) in device and check for any missed calls. However I could notice roaming messages charges from number 0780200332 being applied in my bill with £0.41 each time I keep SIM on device even though I never made any messages. Can anyone help me on this?

Thanks

Haris

[MI5]

@Hi2 

That is the international gateway message centre.

Your phone is sending text messages when you turn on.

If you are using an iPhone it will be iMessage registering on the serversd or if android, it could be visual voicemaill registering.

[Cleoriff]

@Hi2 

The number shown is the message centre number for O2 when you send texts.

If you havent sent any you need to contact Customer services to ask them what the charges are for

Guide: How to find help & contact O2 

[Cleoriff]

@MI5 

You said "Your phone is sending text messages when you turn on".

How can that happen when they aren't sending messages. (Just asking for a friend )

[MI5]

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@Cleoriff wrote:

@MI5 

You said "Your phone is sending text messages when you turn on".

How can that happen when they aren't sending messages. (Just asking for a friend )

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@Cleoriff 

Explanation in post.

iMessage, VVM or any other service requiring a handshake with a server located in another country.

[Cleoriff]

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@MI5 wrote:

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@Cleoriff wrote:

@MI5 

You said "Your phone is sending text messages when you turn on".

How can that happen when they aren't sending messages. (Just asking for a friend )

---

@Cleoriff 

Explanation in post.

iMessage, VVM or any other service requiring a handshake with a server located in another country.

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Oh I see. Never get an iphone or turn VVM off before you travel then?! Lol

[MI5]

iMessage can be turned off too, but yes, not having an iPhone would certainly help

[Hi2]

thanks for your kind reply. any idea how to avoid these kind of charges? i did not send any messages, i am using iphone 7 paymonthly

[MI5]

@Hi2 

Turn off iMessage whilst you are away.

It's not you sending messages, the phone does it automatically.

[Cleoriff]

@Hi2 

Have you an iphone? If so turn iMessage off. If you have Visual Voicemail on, turn that off as well.

Other than that, just use the local sim when away and don't put your O2 one in phone till you get back home.