What does this error mean?
Type the alert, error code or describe the symbol you see. Osnivo shows what Apple says it means and what Apple says to do — word for word, with the source.
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Symbol
Red lightning bolt on Apple Watch
If a red lightning bolt appears on your Apple Watch screen, it means your watch doesn't have enough battery power to turn on. When you connect your watch to its charging cable, the red lightning bolt changes to a red lightning bolt inside a ring.
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Symbol
Warning symbol on Apple TV
If an issue occurs during a software update on your Apple TV, unplug your Apple TV, then plug it back in and try the software update again.
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Symbol
Flashing question mark at Mac startup
If your screen shows a flashing question mark, circle with a line through it, or anything else, your Mac is turned on but isn't starting up:
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Symbol
Circle with a line through it at Mac startup
If your screen shows a flashing question mark, circle with a line through it, or anything else, your Mac is turned on but isn't starting up:
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Symbol
Globe with a warning symbol at Mac startup
A globe with a warning symbol (exclamation point) means that your Mac tried to start up from macOS Recovery over the internet, but couldn't.
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Symbol
Lock icon at Mac startup
If your Mac is using a firmware password, the lock icon appears when you try to start up from another disk or volume, such as an external drive or macOS Recovery.
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Symbol
Image of a mouse or keyboard at Mac startup
If you see a line drawing of the underside of a Magic Mouse or backside of a Magic Keyboard, with a small arrow next to the power switch in the drawing, your Mac can’t detect your built-in or external mouse, trackpad, or keyboard.
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Symbol
Thunderbolt, USB or FireWire symbol on a Mac
A large Thunderbolt, USB, or FireWire symbol against a dark background means that your Mac is in target disk mode.
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Symbol
Display icon with warning symbol on Studio Display
A large display icon with a warning symbol against a dark background on your Apple Studio Display means that your Studio Display is in recovery mode.
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"SOS" or "SOS only" in the status bar
SOS
If you see "SOS" or "SOS only" in the status bar, your device isn't connected to your cellular network, but you can still make emergency calls through other carrier networks. This feature is available in Australia, Canada, and the United States.
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Symbol
"No Service" or "Searching" in the status bar
No Service
If you see "No Service" or "Searching" in the status bar on your iPhone or iPad (Wi-Fi + Cellular), your device isn't connected to a cellular network.
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Symbol
Red iPhone icon on Apple Watch
When your devices aren't connected, the red iPhone icon or the red X icon appears in Control Center. When your Apple Watch connects again, the green iPhone icon appears.
Every meaning and step is quoted from an Apple Support article; Osnivo writes only the titles. Errors often come with a step-by-step fix in Osnivo Fix.