1. install Logkit v1.0.apk, and Engineering Mode v1.01.0.171117173719.apk
2. Open Phone and type *#800# select Engineering Mode
3. Oneplus Logkit ---> Function Switch ---> enable VoLTE, VoWifi и VT
4. Reboot
5. Open settings and enable VOLTE and voWi-fi
6. Open Phone and type *#801# select Engineering Mode
7. Switch to full port switch
8. Open settings and enable debugging by usb mode
9. adb reboot ftm
10. adb shell
11. setprop sys.usb.config diag,diag_mdm,qdss,qdss_mdm,serial_cdev,dpl,rmnet,adb
12. Open PDC and select profile ( sub0 and sub1 then click activate for VoLTE PTCRB for example)
13. Close PDC
14. adb reboot