ZTE Z660G user manual For Your Safety, General Safety, Numbers feature

Troubleshooting

Problem	Possible Causes	Possible Solution
Cannot answer	You have activated the Call barring	In Phone app, press the Menu Key >
		Settings > Call Barring Settings, and
incoming calls	feature.
		then check Deactive All.
	You have activated the Call barring	In Phone app, press the Menu Key >
		Settings > Call Barring Settings, and
	feature.
Cannot make		then check Deactive All.
outgoing calls	You have activated the Fixed dial	In Phone app, press the Menu Key >
		Settings > Fixed Dialing Numbers and
	numbers feature.
		disable it.
		Contact your service provider. If the service
PIN Code blocked	You have entered an incorrect PIN code	provider provides the (U)SIM card’s PUK
	three consecutive times.	code, use the PUK code to unlock the (U)
		SIM card.
Phone crashes,		Reset the phone to factory status.
		Enter safety mode and uninstall the
reboots, freeze, or	Some third-party software is not compatible
cannot be powered	with your phone.	software that may cause the problem.
on
		Upgrade the phone software.

For Your Safety

General Safety

Don’t make or receive handheld calls while driving. And never text while driving.

Keep your phone at least 0.6 inches (15mm) away from your ear or body while making calls.

Small parts may cause choking.

Your phone can produce a loud sound.

Keep away from pacemakers and other electronic medical devices.

Switch off when asked to in hospitals and medical facilities.

Switch off when told to in aircrafts and airports.

Switch off when near explosive materials or liquids.

Don’t rely on your phone for emergency communications.

Don’t use at gas stations.

Your phone may produce a bright or flashing light.

Don’t dispose of your phone in fire.

Avoid contact with anything magnetic.

Avoid extreme temperatures.

Avoid contact with liquids. Keep your phone dry.

Don’t take your phone apart.

Only use approved accessories.

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