I activated and Topped Up my daughter's old VMU iPhone for my son to use. The account and phone are activated and Topped Up into the next month.
$35 Unlimited Talk Text and Data with 5GB 4G LTE High Speed Data
When I try to make a call, it asks me to purchase a prepaid pin or use an existing prepaid pin. What is this?!
Additionally, this phone (I noticed) has a Sprint SIM. Since VMU is an MVNO in the Sprint network, is this normal? The phone is an older iPhone 5S.