1
Notes…on…Usage
Notes on Usage
For…Using…the…Product
Before you start using the product, be sure
to read the "Safety Precautions" to ensure
correct use.
Before considering that there is a
malfunction, check "トラブル診断 (Trouble
diagnosis)" from the following au website.
https://www.au.com/trouble-check/
(Japanese)
Please also refer to the "故障とお考えになる前
に(Troubleshooting)" from "取扱説明書 詳細版
(Full Instruction Manual)" (Japanese) or "オン
ラインマニュアル (Online Manual)" (Japanese)
available on the au website.
Galaxy…S21+…5G…:
https://www.au.com/online-manual/scg10/
(Japanese)
https://www.au.com/support/service/
mobile/guide/manual/ (Japanese)
Galaxy…S21…5G…:
https://www.au.com/online-manual/scg09/
(Japanese)
https://www.au.com/support/service/
mobile/guide/manual/ (Japanese)
• Communication is not possible even
inside the service area in places where
the signal does not reach (e.g. tunnels
and basements). Also, communication is
sometimes not possible in poor reception
areas. Communication is sometimes
interrupted if you move into a poor
reception areas during communications.