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 Motorola Moto Z2 Force

Go to Settings More / Mobile networks Access Point Names

Press ➕ on right top corner.

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

Do not change the default values set by device for all blank fields above.