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iPhone Duo (Special Build)
iPhone (Mainline Release)
iPhone Duo (Special Build)
iPhone 16e (Special Build)
Overview
Emergency alerts
Settings (88)
Files (3)
Changes
Alerts (6)
Listed in Settings under
FI-Alert
.
Switch
User can turn off
On by default
Sounds when muted
Muted by Do Not Disturb
Notification title
Exercise Alerts
yes
no
no
yes
FI-Alert Exercise Alert
Public Authority Announcements
yes
yes
no
yes
FI-Alert Public Authority Announcement
Severe Alerts
no off switch
yes
yes
no
FI-Alert Severe Alert
Silent Severe Alerts
yes
yes
no
yes
FI-Alert Severe Alert (Silent)
Test Alerts
yes
no
no
yes
FI-Alert Test Alert
WHAM
no off switch
yes
Message IDs (6)
Range
Alert type
3GPP TS 23.041
4370
SevereAlerts
Presidential-level alert (CMAS class 1)
4373-4378
SilentSevereAlerts
Severe threat
4380
TestAlerts
Required monthly test
4381
ExerciseAlerts
CMAS exercise
4396
PublicAuthorityAnnouncements
Public safety message
4400
WHAM
Geofence trigger message (not user-visible)
Other alert settings
Device geofencing
enabled
Duplicate suppression
30 min window, inter-SIM yes, intra-SIM yes
Emergency numbers
112
AML SMS destination
112
Alert sound / vibration
cbs_alert_us.caf / cbs_vibe_us.plist, / , Text / cbs_vibe_us.plist
ISO codes
fi, ax