Just to confirm VoLTE is a technology of SIM chips? If so I think I get the picture. So probability I will root anyways. Any tips about to see if TWP is good or a malware that will get bitcoins,I found this on xda forum but I can't get any confirmation.If you have a Samsung I recommend not rooting or installing a custom ROM at all. Just use one of the "debloat" scripts out there to disable unwanted apps, and go through and carefully set all the privacy-related settings. VoLTE is not supported on custom ROMs on Samsungs and probably never will be.
And thanks for the heads-up to debloat scripts I will use it in a newer phone.

