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global_setting_D.der.gri not named for a phone; read alongside each phone's own file where its modem uses this kind of file.

Header
GRI Revision13.5.4
Baseband overrides (6)
SettingValue
mav_lte_band_per_plmnlikely
Band priority per PLMN: Per-PLMN band / sub-band (ARFCN range) scan priority
/nv/item_files/modem/nas/mav_lte_band_per_plmn
mav_lte_prio_sub_band_per_plmnlikely
Band priority per PLMN: Per-PLMN band / sub-band (ARFCN range) scan priority
/nv/item_files/modem/nas/mav_lte_prio_sub_band_per_plmn
mcc2bands.mdb.mav_srcunverified
PolicyMan data: PolicyMan database / flag
/mdb/policyman/mcc2bands.mdb.mav_src
mcc2border.mdbunverified
PolicyMan data: PolicyMan database / flag
/mdb/policyman/mcc2border.mdb
mav_pssi_reg_gfnh_allowed_plmn_per_geo_locationunverified
Satellite PLMN rule: Apple satellite (GFNH) PLMN / geofence rule
/nv/item_files/modem/nas/mav_pssi_reg_gfnh_allowed_plmn_per_geo_location
mav_pssi_reg_gfnh_mcc_list_per_regulatory_policy_category_sat_usage_bannedunverified
Satellite PLMN rule: Apple satellite (GFNH) PLMN / geofence rule
/nv/item_files/modem/nas/mav_pssi_reg_gfnh_mcc_list_per_regulatory_policy_category_sat_usage_banned
Legacy NV values (1)
NVItemValue
62033GRI revision
Packed GRI Revision header
263437= 13.5.40x0d050400
Legacy NV item list (1)

Green ones have a value above.

62033GRI revision
NV path schema index (6 paths, raw) 
/nv/item_files/modem/nas/mav_lte_band_per_plmn
/nv/item_files/modem/nas/mav_lte_prio_sub_band_per_plmn
/mdb/policyman/mcc2bands.mdb.mav_src
/mdb/policyman/mcc2border.mdb
/nv/item_files/modem/nas/mav_pssi_reg_gfnh_allowed_plmn_per_geo_location
/nv/item_files/modem/nas/mav_pssi_reg_gfnh_mcc_list_per_regulatory_policy_category_sat_usage_banned
789 carriers, 225 countries · iOS 27.0.1 (24A446) · beta iOS 27.2 beta 2 (24B5089g) GitHub Ready