VoLTE not supported for any trick

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2017-02-15 15:27

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hello friends today I intended to replace builtprop from the scratch though I didn't modify the scr ipt that indicates this L model. I've matched almost all from the M model and unmodified some still no VoLTE.Im very doubies...what would the engineer of this L model done? both contains same hardware nd software yet A has VoLTE but not G