The LC-70UE30 supports an 802.11n WiFi standard which is newer than most 4K and 8K TVs that are a comparable age to it. Most TVs that have been on the market for around the same time as it support an 802.11a WiFi standard. This television also support 802.11ac and 802.11b and 802.11g WiFi standards.
This TV's WiFi standard (802.11n) is in fact the best supported WiFi standard across all TVs of a comparable spec and age to the LC-70UE30.
Across similar types of TV the worst supported WiFi standard is 802.11a.