"No Service" for my SIM Card

[Kimi]

I have a SIM card is under "Pay As You Go". I haven't used it around 10 months, and I just noticed there's no network and showing "NO SERVICE", I tried to make a call but not working. Is my number invalid now? I'm currently not in UK, is there any way I can solve this problem? 

[MI5 · Accepted solution]

@Kimi 

You need to make a call at least once every 6 months or top up to keep the sim active.

To attempt to reactivate it, you need to speak to customer service.

Guide: Coronavirus Community Help and Support 

http://www.o2.co.uk/contactus

[Kimi]

@MI5  Is there any online / email to contact the Customer Service directly? I can top up the card. 

[Cleoriff]

@Kimi 

No email. You need to call.

[MI5]

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@Kimi wrote:

@MI5  Is there any online / email to contact the Customer Service directly? I can top up the card. 

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@Kimi 

All methods are in the links I gave you.

You can try using Skype over the connection you are using now.