Key facts
- Brand
- au by KDDI
- Model
- W21S
- Category
- Other
- Documents
- 2
- Languages
- EN
- Last added
- 2012-03-28
Start here
au W21SA Basic Manual
This manual explains how to operate the au W21SA mobile phone, covering basic functions like making calls, using the address book, sending mail, and accessing EZweb services. It also describes how to use the camera, FM radio, EZchannel, and EZnaviwalk navigation features.
Safety and etiquette sections advise proper phone etiquette, handling of electric waves, and precautions when using the device in prohibited areas. Additional chapters cover battery management, power reception, junk mail filtering, one‑ring call protection, and troubleshooting tips.
All au by KDDI W21S documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
- au W21S Phone User Manual 103 p
- au W21SA Basic Manual 106 p
Questions answered in these manuals
How can I turn off incoming rings to avoid disturbing others?
Activate Manner mode by holding down the idle display for at least one second.
How do I block spam e‑mail on the W21S?
Use the mail filter function and select options such as "ARBLHI + IL9—" to block spam messages.
How do I activate Manner Mode to silence the ringer?
Press and hold the Manner Mode button for more than one second on the Standby Screen.
From: au W21SA Basic Manual
What should I do if I receive a one‑ring call?
One‑ring calls are likely scams; the call will be displayed as a one‑ring call in the received record.
From: au W21SA Basic Manual