Hi @HAPPY,
Welcome to the Three Community.
I hope your tests with this temporary number are going well.
If you'd like to bring your existing number over, then your old provider should be able to issue a PAC code to authorise the transfer any time within 30 days of receiving the code. After you've got the PAC you can arrange your switch through My3 or our PAYG app. There's some more info about PAYG switching here.
In terms of the timeframes, if you arrange your port in before 6PM, then the switch will happen the next working day. Ports requested on weekends happen on the following Tuesday. If you've a preferred date, you can also schedule the switch to happen on any Monday-Friday date before your PAC expires (excluding bank holidays).
Porting timeframes may also be altered for bank and public holidays, we'll confirm this at the time of the porting request if it applies.
Most ports complete between 9AM-5PM however you should allow up to midnight for the transfer to complete. Usually you can use the SIM from your old provider right up till the port completes, so you may find it helpful to keep the old SIM inserted, and when you see this is no longer connecting or picking up signal, then switch to the new Three SIM.
Hope this helps and all makes sense. 🙂
JonathanB
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