assets/carrier_config_310640.xml

<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<carrier_config_list>
    <carrier_config>
        <boolean name="rtt_supported_bool" value="true" />
        <boolean name="carrier_volte_available_bool" value="true" />
        <boolean name="carrier_volte_tty_supported_bool" value="false" />
        <boolean name="carrier_wfc_ims_available_bool" value="true" />
        <boolean name="carrier_ims_gba_required_bool" value="true" />
        <int name="vvm_port_number_int" value="1808" />
        <string name="vvm_destination_number_string">122</string>
        <string name="carrier_vvm_package_name_string">com.tmobile.vvm.application</string>
        <string name="vvm_type_string">vvm_type_cvvm</string>
        <int name="volte_replacement_rat_int" value="3" />
        <int name="maxMessageSize" value="1048576" />
        <int name="maxImageWidth" value="2592" />
        <int name="maxImageHeight" value="1944" />
        <boolean name="carrier_name_override_bool" value="true" />
        <string name="carrier_name_string">T-Mobile</string>
    </carrier_config>
</carrier_config_list>