Sprint Sim Card Number. You will find the sim card number on the backside of your sim card. Up to 22 digits can make up this integrated circuit card identifier (iccid).
To copy the number, tap and hold the iccid number until copy is displayed above it. Once the sim card is removed from the iphone, you can see numbers stamped on one side of the sim card, opposite the metal contacts. If you call and ask they will tell you it's card cz2114lwq which is true, but unfortunately it does not say that number on the actual card anywhere leading to confusion in the stores.
This is great for people who live in areas with bad reception because they will have no problem using their phone.
Instead, it uses the sprint network to provide wireless service. Enter your phone serial number and it will tell you if your phone will work on tello (sprint) and it will ask you if you need a sim card. (3 numbers followed by 3 letters followed by 4 numbers). Up to 22 digits can make up this integrated circuit card identifier (iccid).