No premium brand is fully supported users...take LG Samsung and even Sony to certain extent doesn't provide all apps support even now...
Take a so called unbranded likes of Mi TCL Onida VU and few others supports almost all apps with good quality audio video features..i have even used Sony..there is no issues in PQ as it's best but at what cost? About 1 and half or double heigh price..if any issues we have to take it to their service center only and spares r at heighest cost..can't buy from outside..a common man can't afford it.this is my personal experiance..i sold and bought so called low brands...i am very happy with PQ and support of all apps ..also getting updates to latest features of apps..
So branded TVs r not for common people and they get all app supports in those low branded equipments.