Brand: au by KDDI
Category: Mobile Phone
Document Type: Manual
Language: EN
Brand: au by KDDI
Category: Mobile Phone
Document Type: Manual
Language: EN
Uploaded: Nov. 21, 2025, 8:51 p.m.
Manual Publish Date: 2006-10-01
| Symptom | Check | Measure | Reference Page |
|---|---|---|---|
| Cannot turn on power. | Is the battery pack charged? | Charge the battery pack. | 13 |
| Did you hold down for at least one second? | Hold down for at least one second. | 16 | |
| Is power turned on? | Hold down for at least one second. | 16 | |
| Cannot make calls. | Is ▿ (out of range indicator) displayed? | Move to a location where ▿ (out of range indicator) is no longer displayed, and try again. | 16 |
| Is your hand or a metal object covering the area around the built-in antenna? | Make sure your fingers or any other part of your hand or a metal object is not touching or covering the area around the built-in antenna. | 11 | |
| Did you enter the phone number starting with the area code? | When making a call to a phone other than a cell phone, you need to enter the area code first even if you are inside the same area. | 29 | |
| Cannot receive calls. | Is Emission OFF set? | Cancel Emission OFF. | - |
| Is ▿ (out of range indicator) displayed? | Move to a location where ▿ (out of range indicator) is no longer displayed. | 16 | |
| No response when a key is pressed. | Is power turned on? | Hold down for at least one second. | 16 |
| Is Emission OFF set? | Cancel Emission OFF. | - | |
| No response when a side key is pressed. | Is ◂ (side key lock indicator) displayed? | Press for at least one second to unlock the side keys. | 20 |
| A warning tone sounds and power turns off. | Is there enough power left in the battery pack? | Charge the battery pack. | 13 |
| Cannot hear the other party. | Is voice memo turned on? | Hold down for at least one second to turn off voice memo. | 34 |
| Is the earpiece volume level too low? | During a call, press to increase the earpiece volume. | 39 | |
| When making a call, a beeping sound is heard from the earpiece and a connection cannot be established. | Is ▿ (out of range indicator) displayed? Or are you in a location where the signal is too weak? | Move to a location where ▿ (out of range indicator) is no longer displayed. | 16 |
| Is the wireless line congested or is the phone you are calling busy? | End the call and try again later. | 29 | |
| The incoming LED flashes but the ring tone does not play. | Is manner mode turned on? | Hold down for at least one second to turn off manner mode. | 33 |
| Is ■ (silent indicator) displayed on the standby screen? | Increase the volume of the incoming call ring tone. | 38 | |
| Cannot charge the battery pack. | Is the cell phone inserted in the desktop holder properly? | Insert the cell phone in the desktop holder properly. | 13 |
| Are the plug and connector of the common AC adapter 01 (sold separately) inserted properly? | Confirm the position of the camera (lens). | 70 | |
| When the camera function is started, no subject is displayed. | Is a finger or other object covering the camera (lens)? | Confirm the position of the camera (lens). | 70 |