Sorry mis-read I though you were transferring in. Transfers are start from the new provider, you should just need your current public mobile number, account number at public mobile, SIM number at public mobile on back of sim chip, IME number from pho...
You transfer numbers after you sign up for service with public mobile including payment. Then open the app to register what to do with your newly activated sim, transfer or new number etc.
You may want to check your text messages for a text request approval to transfer your number. WHICH you need to reply to within 90mins. Your old sim should stay in your phone until this process completes. I would reply then call your old cell provid...