AT&T Z431 manual Problem Possible Causes Possible Solution Battery will, Temperature to return to

Problem	Possible Causes	Possible Solution
Battery will	The battery or battery charger	Contact the dealer where you
not charge	is damaged.	purchased the equipment.
	The phone’s temperature is	1.  Move the battery to an
	below 32°F (0°C) or higher	environment where the
	than 113°F (45°C).	temperature is within
		operating range.
		2.  Allow time for the battery’s
		temperature to return to
		normal before attempting
		to charge again.
	Poor contact between the	Check and clean all
	battery and charger.	connectors to ensure good
		contact.
Unusually	Certain phone functions	Disable Bluetooth and/or HAC
short battery	consume additional battery	mode if you are not using
life	power, such as Bluetooth and	these functions.
	HAC mode.
	Weak network signal.	Turn off the phone until you
		reach an area with a strong
		network signal.
Phone will not	Battery is depleted.	Charge the battery.
turn on

62 Troubleshooting and FAQs

Problem	Possible Causes	Possible Solution
SIM card error	SIM card is damaged or	Take the SIM card to a service
	defective.	center for testing.
	SIM card inserted improperly.	Check to ensure that the
		SIM card is facing the right
		direction and that it is fully
		inserted into the slot.
	Dirt or debris on the SIM card	Use a soft, dry cloth to clean
	contacts.	the SIM card contacts.
PIN code is	You have entered an incorrect	If you have the SIM card’s
blocked	PIN code ten consecutive	PUK code, use the PUK code
	times.	to unlock the SIM card.
		If you do not have the PUK
		code, contact your service
		provider.
Unable to enter	The Address Book’s memory	Delete unneeded data from
information	is already full.	the Address Book.
into the
Address Book

Troubleshooting and FAQs 63