Z750a_UG_AT&T_P1C_AE.book Page 54 Wednesday, September 12, 2007 8:18 AM

The SmartChip is not working properly. Insert your SmartChip in another phone. If this works, it is probably your phone that is causing the problem. Please contact the nearest Sony Ericsson service location.

Emerg. calls only

You are within range of a network, but you are not allowed to use it. However, in an emergency, some network operators allow you to call the international emergency number 112. See Emergency calls on page 16.

PUK blocked. Contact operator. You entered your personal unblocking key code (PUK) incorrectly 10 times in a row.

Charging, alien battery

The battery that you are using is not

aSony Ericsson-approved battery. See Battery on page 58.

Hearing Aid

Compatibility

Your phone is designed for Hearing Aid Compatibility (HAC) and uses many settings for optimized use with hearing aids.

Hearing Aid Settings

You can choose the setting in the phone to match the setting in your hearing aid before making or receiving calls in HAC operation.

From standby, select Menu > Settings

>the General tab > Accessibility

>HAC/Hearing Aid and choose an option:

• On - use when your hearing aid is set toT-coil mode.

• Off - turns off HAC operation.

54Hearing Aid Compatibility

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Sony Ericsson Z750a manual Hearing Aid Compatibility, Hearing Aid Settings, Emerg. calls only