The entire list of the Sony blu-ray disc devices and Sony Smart TVs that support Tubi is below:
UBP-X700, UBP-X800, UBP-X1000ES
2015
KDL-**W800C/W850C, XBR-**X830C/X850C/900C/910C/930C/940C
2016
KDL-**W600D/650D/750D
XBR-**X850/930/940D/700D/750D/800D/Z9D
2017
KD-**X690E/720E
XBR-**X700E/750E/800E/850E/900E/930E/940E
XBR-**A1E
2018
KD-**X720F/730F
XBR-**X900F/850F/830F/750F/A8F, KD-**X780F/750F
XBR-**A9F/Z9F
Don't know your Sony device model number? Check out the following article: How do I find my Sony device model number?
** denotes screen size (e.g. 49”, 55”, 65” 70” 75” 85”). Screen sizes vary by model.