Change UE usage setting on X52, X53, X55, X60, X65 modems with MPSS.HI.2.0, MPSS.DE.1.0 baseband firmware or newer:
This guide assumes you are already familiar with QPST and how to gain access to the diag port on your device. See this guide for enabling diag on various commercial UEs: Link
Devices which are set to voice_centric will not connect to the network if IMS (VoLTE/VoNR) services are enabled but not registered. Devices which are set to data_centric will ignore the lack of IMS (VoLTE/VoNR) services and connect anyway. This is useful for networks such as Dish Wireless which is SA only but not providing any IMS services yet. Hotspot devices are sold as data centric. Smartphones are voice centric. However, it’s possible to change it.
How to set the UE usage setting to either voice or data centric
Step 1: Launch EFS explorer
Launch QPST with your device in diag mode. Then, open the EFS explorer.
Step 2: Upload the NV item files for the UE usage setting
Navigate to /nv/item_files/modem/mmode/
Right click and “Copy item file from PC”, do not drag or drop.
List of NV item files:
ue_usage_setting set to 0x01 for data centric
ue_usage_setting set to 0x00 for voice centric
For dual SIM devices also add:
ue_usage_setting_Subscription01 set to 0x01 for data centric
ue_usage_setting_Subscription01 set to 0x00 for voice centric
Download from [here] for voice centric (https://band.radio/voice_centric.zip) Download from [here] for data centric (https://band.radio/data_centric.zip)