The OLED55B6 supports Wi-Fi. Most of the other TVs that have been available for around the same time as this TV also support Wi-Fi.
We think you might also be interested in some of the alternative TVs which support Wi-Fi currently available including because of their better review scores, the LG 55UH950 (£1,099), or the Samsung UE55JS8000 (£1,099).
Alternative televisions which also support Wi-Fi that you might want to look at include the Sony KD-65XD7505 (£1,099).
What is Wi-Fi?