Flyme 6.7.4.11G beta, Meizu M3s

I have a problem with voice over LTE feature on my M3s. There is volte option given since the mobile came in the market. Many of us had already reported about this earlier and expected that volte feature will came along flyme 6 update but not came. Whenever  i had to make a call using 4g sim like jio4g i had to use app like jio4gvoice app  to make call  and that also when my data is turned on and i am unable to receive calls whenever my data is off. The default phone dialer can't connect the calls . So please give volte update soon.