Hi, I'm looking to switch from my monthly plan to a prepaid phone. I'm trying to register my prepaid right now, but in the contact info it's asking for an alternative phone number. I only have one phone number and it's my cell number with Koodo. I'm not sure if that's the number I should enter because A) It's not my alternative number, it's my primary one and B) I don't know if that will even be my number once I activate this new phone. Suggestions?