Big bundles online application for SIM

[HHGTTG]

If I get a Free Big Bundle SIM online, to change from my current old PAYG which only gives 300 texts and 500MB data, how does one ensure that the SIM that is sent has my existing mobile phone number? Is this entered in the application process for, say, the 500MB SIM/250mins/1000texts. Would it be better to go to one's local O2 store to do this?

[Cleoriff]

You would need to do the swap my sim process. http://swapmysim.o2.co.uk/

Far easier in my opinion to do it all instore..

[MI5 · Accepted solution]

You can just call CS on 4445 and ask them to switch your tariff on your current sim card.

[jonsie]

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@MI5 wrote:
You can just call CS on 4445 and ask them to switch your tariff on your current sim card.

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Definitely the easiest option, no messing. Call 4445 early morning is your best bet.

[HHGTTG]

Apparently, it's also possible to text, say, 10Bigbundle or 20Bigbundle etc to a certain number to get these packages. How does this work and how would they get your first payment to activate the account?

[browni]

May be well off here but wouldn't the current SIM card need to be 4g ready if transferring to a new tariff?

[MI5]

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@HHGTTG wrote:

Apparently, it's also possible to text, say, 10Bigbundle or 20Bigbundle etc to a certain number to get these packages. How does this work and how would they get your first payment to activate the account?

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The new bundle wouldn't actually activate until your anniversary date assuming you topped up enough money.