I bought the phone on Amazon and entered the phone number that had the available upgrade

Also the hot spot option does not work, the phone number can not be recognized

Writing down a phone number or jotting down a serial number for a game system

I went on line to TF via a CHAT web site (on the TF web site), where the helpful lady ignored the UNREADABLE statement; -She ACTIVATED the phone, transfered my "buckets" of talk, SMS and data, as well as my old phone number to the new Note 4 in just a few minutes

All they told me to deal with my broken phone number to contact Samsung

Other than that phone works great and o love it.

Love the phone thank u