Sony NPA-MQZ1K Multi Battery Adapter Kit - Manual (Page 97)

If the above procedure does not deliver any improvement, change the setting of your wireless
router to 5GHz, which may help improve the video streaming quality.
The 5GHz band may not be supported depending on your region/country. If the 5GHz band is
not supported, the TV can only connect to a wireless router using the 2.4GHz band.
Note
It is strongly recommended for security purposes to connect your TV to the Internet
via a router/modem that includes router functionality. Direct connection of your TV to
the Internet may expose your TV to a security threat such as extraction or tampering
of content or personal information.
Contact your service provider or network administrator to confirm your network
includes router functionality.
The network-related settings that are required may vary depending on the Internet
service provider or router. For details, refer to the instruction manuals provided by
the Internet service provider or those supplied with the router. You can also contact
the person who set up the network (network administrator).
If you select the [Show password] option in the password entry screen, the exposed
password may be seen by other individuals.
Related topics
Network (Internet/home)/apps
The TV cannot connect to the Internet/Network.
Connecting to a network using a LAN cable
Home network features
[79] Connecting to a Network
Home network features
Adjusting home network settings
Playing content from a computer
Playing content from a media server
[80] Home network features | Home network features