SOS at the top of an iPhone: what does it mean?
On an iPhone it means your own carrier’s full service isn’t available, but emergency calls may still be possible through other networks.
What Apple says
- iPhone (Apple) — SOS only. Full service from your cellular provider isn’t available, but emergency calls may be possible through other carrier networks (not in all countries or regions).
Source: Apple Support: Learn the meaning of iPhone status icons (iPhone User Guide) (checked 2026-09-29)
- What it looks like
- The letters SOS where the signal bars or carrier name would be.
- Shown by
- iPhone (Apple)
Icons to compare
Sources
Each meaning above is taken from the maker’s own support page, fetched and read on the date shown. The drawing is ours; the real icon on your phone may be drawn a little differently and can change with software updates.
- iPhone (Apple) — Apple Support: Learn the meaning of iPhone status icons (iPhone User Guide). OS: iOS 27, the version the guide opened on; not dated on the page. Checked 2026-09-29.