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Chapter 2 Basics 33
Important: The iPhone battery may drain instead of charge if iPhone is connected
to a computer that’s turned off or is in sleep or standby mode. iPhone 3G cannot be
charged from a FireWire-based power source.
An icon in the upper-right corner of the screen shows battery charging status.
Charging Charged
If you charge the battery while syncing or using iPhone, it may take longer to charge.
Important: If iPhone is very low on power, it may display one of the following images,
indicating that iPhone needs to charge for up to ten minutes before you can use it.
If iPhone is extremely low on power, the display may be blank for up to two minutes
before one of the low-battery images appears.
or
Maximizing Battery Life
iPhone uses lithium-ion batteries. To learn more about how to maximize the lifespan
and battery life of your iPhone, go to www.apple.com/batteries.
Replacing the Battery
Rechargeable batteries have a limited number of charge cycles and may
eventually need to be replaced. The iPhone battery isn’t user replaceable; it can
only be replaced by an authorized service provider. For more information, go to
www.apple.com/support/iphone/service/battery.
Cleaning iPhone
To clean iPhone, unplug all cables and turn off iPhone (press and hold the Sleep/ Wake
button, then slide the onscreen slider). Use a soft, slightly damp, lint-free cloth. Avoid
getting moisture in openings. Don’t use window cleaners, household cleaners, aerosol
sprays, solvents, alcohol, ammonia, or abrasives to clean iPhone.