diff --git a/private/app_neverallows.te b/private/app_neverallows.te
index aff3a0a..c7fa4e8 100644
--- a/private/app_neverallows.te
+++ b/private/app_neverallows.te
@@ -45,6 +45,9 @@
 # net.dns properties are not a public API. Disallow untrusted apps from reading this property.
 neverallow { all_untrusted_apps } net_dns_prop:file read;
 
+# radio_cdma_ecm_prop properties are not a public API. Disallow untrusted apps from reading this property.
+neverallow { all_untrusted_apps } radio_cdma_ecm_prop:file read;
+
 # Shared libraries created by trusted components within an app home
 # directory can be dlopen()ed. To maintain the W^X property, these files
 # must never be writable to the app.
diff --git a/private/property.te b/private/property.te
index 267ff85..9f9ebbf 100644
--- a/private/property.te
+++ b/private/property.te
@@ -26,6 +26,7 @@
 system_internal_prop(perf_drop_caches_prop)
 system_internal_prop(pm_prop)
 system_internal_prop(profcollectd_node_id_prop)
+system_internal_prop(radio_cdma_ecm_prop)
 system_internal_prop(rollback_test_prop)
 system_internal_prop(setupwizard_prop)
 system_internal_prop(system_adbd_prop)
diff --git a/private/property_contexts b/private/property_contexts
index 0b9446e..f52b5ee 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -81,6 +81,7 @@
 persist.traced_perf.enable u:object_r:traced_perf_enabled_prop:s0
 persist.vendor.debug.wifi. u:object_r:persist_vendor_debug_wifi_prop:s0
 persist.vendor.overlay.  u:object_r:overlay_prop:s0
+ril.cdma.inecmmode      u:object_r:radio_cdma_ecm_prop:s0 exact bool
 ro.boot.vendor.overlay.  u:object_r:overlay_prop:s0
 ro.boottime.             u:object_r:boottime_prop:s0
 ro.serialno             u:object_r:serialno_prop:s0
diff --git a/private/radio.te b/private/radio.te
index 2758289..08365f0 100644
--- a/private/radio.te
+++ b/private/radio.te
@@ -9,6 +9,7 @@
 set_prop(radio, radio_prop)
 set_prop(radio, net_radio_prop)
 set_prop(radio, telephony_status_prop)
+set_prop(radio, radio_cdma_ecm_prop)
 
 # ctl interface
 set_prop(radio, ctl_rildaemon_prop)