Before you start Many LTE devices can run this update over Wi-Fi but if you're having trouble getting the update to start, or it fails before completing, you may need to disable Wi-Fi and enable data instead.
A Hands Free Activation encompasses both a Profile and a PRL update, as well as a Firmware check on most phones.
Every time your phone reaches out to the cellular network and downloads information related to your phone’s access to voice, text and data services, you’re completing an over-the-air update.
This information can include your phone number, or be related to the roaming network, the sign in credentials that are needed for you to access the internet, and more.
The Preferred Roaming List (PRL) is a database residing in a wireless (primarily CDMA) device, such as a cellphone, that contains information used during the system selection and acquisition process.
In the case of R-UIM-based CDMA devices, the PRL resides on the R-UIM.