New sim old number!

[smc]

How long does it take for a new pay monthly sim to be changed to the number of your old PAYG?

[Cleoriff]

Hi @smc Have a look here. It tell you how to do it and the forms to use...

http://www.o2.co.uk/help/phones-sims-and-devices/how-to-keep-your-mobile-number

Scroll down to the payg to pay monthly

Form to use is here

https://www.o2.co.uk/apps/help/help?qid=1&q1=2&route=port_migrate&case=Port/Migrate%20In%20Form

[smc]

Yeah I filled form in yesterday but couldn't recall if it said how long it would take.

[Cleoriff · Accepted solution]

It can be immediate...(My husbands was) but could take a couple of days. If you want to check on progress then contact CS http://www.o2.co.uk/contactus

[MI5]

Usually next day if submitted on line.
Your old sim will turn off first then you need to put new sim in phone and reboot every half hour until it connects.