Brand: au by KDDI
Category: Mobile Phone
Document Type: Manual
Language: EN
Manual for W51SA
Uploaded: Nov. 21, 2025, 7:43 p.m.
Manual Publish Date: 2007-01-01
- Making Calls: Press the power button to turn on the phone. Dial a number using the keypad and press the call button.
- Answering Calls: Press the call button when the phone rings.
- Using EZweb: Access the EZweb service to download content like wallpapers and ringtones, or browse the internet.
- Sending Mail: Compose and send emails to other devices.
- Camera: Take photos and videos and send them via email.
- EZ Navigation: Use location-based services for navigation.
- EZ FeliCa: Utilize mobile payment and membership card functions.
- EZ Television (1Seg): Watch mobile TV broadcasts.
- EZ-FM: Listen to FM radio.
- Manner Mode: Set the phone to not disturb others with ringer sounds.
- Answer Phone: Configure the phone to answer calls and record messages when unavailable.
Troubleshooting and error codes
| Symptom | Item to Check | Solution | Page |
|---|---|---|---|
| Cannot turn the power ON. | Is the battery pack charged? | Charge the battery pack. | 12 |
| Did you press $\boxed{\text{PWR}}$ for more than one second? | Press $\boxed{\text{PWR}}$ for more than one second. | 13 | |
| Cannot make a call. | Does $\boxed{\text{圏}}$ appear on the screen? | Try to make the call again at the place where $\boxed{\text{圏}}$ does not appear on the screen. | 13 |
| Did you include the area code? | If you are making a call to a phone other than a cell phone, include the area code, even when calling from the same city. | 21 | |
| Is the power turned ON? | Press $\boxed{\text{PWR}}$ for more than one second. | 13 | |
| Did you press $\boxed{\text{ペア}}$? | Press $\boxed{\text{ペア}}$ after entering the phone number. | 21 | |
| Cannot receive calls. | Does $\boxed{\text{圏}}$ appear on the screen? | Move to a place where $\boxed{\text{圏}}$ does not appear on the screen. | 13 |
| Is the power turned ON? | Press $\boxed{\text{PWR}}$ for more than one second. | 13 | |
| The battery runs out in a short time. | Have you used "EZ Television (1Seg)", "Hello Messenger", "au Music Player" or "FM Transmitter", etc. for a long time? | EZ apps (BREW®) such as EZ Television (1Seg) may consume a large amount of the battery. Note that "Hello Messenger", the "au Music Player" and the "FM Transmitter", etc., also require a large amount of battery power. | - |
| Do you often use W51SA in standby where $\boxed{\text{圏}}$ appears? | Move to a place where $\boxed{\text{圏}}$ does not appear on the screen. | 13 | |
| Keys do not respond. | Is the power turned ON? | Press $\boxed{\text{PWR}}$ for more than one second. | 13 |
| The power is turned off after an alarm sounds. | The battery pack level is low. | Charge the battery pack. | 12 |
| Calls are answered automatically. | Is Answer Phone ON? | Turn Answer Phone OFF by pressing $\boxed{\text{クリア}}$ and selecting "Ans Ph/ Ph Memo", then selecting "Answer Phone" and then "OFF". | 25 |
| Cannot hear the other party's voice. | Is the receiver volume setting high enough? | Press $\boxed{\text{マナー}}$ while talking. The volume of the other party is increased. | 24 |