I've switched my number and got the text that it was ready. It took about an hour and after that, I was able to receive texts and phone calls. However, iMessage is not activating. I've put my phone number in the exact same format that it was on my old Tesco sim in phone in settings. I was aware of the credit thing so I added a euro worth of credit to my 48 account after the porting was finished. I still cannot send texts or make calls. Bare in mind, I still haven't bought a membership with it yet. The 1gb of data is working fine though. Do I have to buy a membership to even send a text or make calls even after buying credit? Will that activate iMessage?