All the instructions I found online for how to find your Straight Talk Account Number are wrong. I have figured out the right way and am going to share it with you.
For my Bring Your Own Phone (BYOP) plan the account number is the IMEI number of the phone I have been using. I’m not sure how long it takes to switch over when you insert the SIM into the new phone.
Use this information to transfer your number.
I hope this helps you and saves you some trouble.