So, this is my scenario:
Phone A (Old phone): Handles WCDMA sim only. Old number is in this phone and whatsapp is associated to this number. I have the number and the phone. Number is still active. Has Android Jellybean
Phone B (New phone): Handles microSIM only. New number is on this phone. Has Android KitKat.
I want to migrate my WhatsAPP account from my old phone to the new one! Only problem is, I can't insert old sim in the new phone or the new sim in the old one because they are different types (WCDMA and microSIM).
So how can I do this?