au by KDDI インターネット アクセスポイント名 (APN) 設定のための OnePlus 7

Go to Settings Connections Mobile networks Access Point Names

Add a new APN by pressing ADD on right top corner. If device has already set values for au by KDDI Internet for any fields below leave them. Change others as below.

Name: au by KDDI Internet
APN: au.au-net.ne.jp
Proxy:
Port:
Username: user@au.au-net.ne.jp
Password: au
Server:
MMSC:
MMS proxy:
MMS port:
MCC:
MNC:
Authentication type: CHAP
APN type: default
APN protocol: IPv4
APN roaming protocol: IPv4
Bearer: Unspecified
APN PPP phone number: Not set