The Sharp LC-43UB30 supports a newer WiFi standard than most 4K and 8K TVs that were released around the same time as it. This TV supports an 802.11n WiFi standard, whereas most 4K and 8K TVs that have been on the market for around the same time as it support an 802.11a WiFi standard. In addition, this Sharp TV support an 802.11b and 802.11g WiFi standard.
This TV's WiFi standard (802.11n) is actually the best supported WiFi standard across all TVs of this spec and age.
Across similar types of TV the worst supported WiFi standard is 802.11a.