http://www.flyme.cn/firmwarelist-19.html#3

No VoLTE support for this firmware too.... I'm using it.( V 6.6.12.30beta yunos version 3.1.6). If You know how to enable VoLTE on this firmware, please reply.

yeah...i have also used flyme 6 beta ..no volte option in phone settings

waiting for Punnu's reply

Not even 4G perfectly working, after inserting jio it says Meizu M2 totally not a 4G device. How could it supports VoLte ???? ???? ????  OTG doesn't support in it.

please can you provide procedure to update to 6.

frndz do refer on this thread........
http://forum.flymeos.com/thread-7052-1-1.html
if still not got volte after completing these steps then I am sorry frndz this Mobile meizu m2 is not having hardware for volte.......

VoLTE isn't a hardware feature

no Raunak you are wrong VoLTE can be a software or hardware limitation depending on the way the Backend for VoLTE (called IMS) is exposed. If the IMS can be exposed on public internet, with a public IP, then VoLTE is a software onli thing, but you cannot get assure quality of service. If the IMS cannot be exposed on public internet, but it run on a private secluded network, then get assured guaranteed quality of service, but the VoLTE becomes a hardware limitation as phone now need two different connection (One for data and one for IMS). Because the 4G standards requires VoLTE to guarantee Quality of Service, it is generally implemented on a private network, and thus it is a hardware dependent. If your chipset doesn’t support VoLTE functions/Application Processor, you might get VoLTE via public IMS hack, but you can never get Native VoLTE. Please visit the link I shared to know the answer in detail.

VOLTE is mostly software but it uses hardware to encode voice into the digital data.