What is your mobile model ?Can you give me that ims patch? Whatever it is
I can assure you once you give me patch i can merge it and see
For Google Pixel:
I used Pixel IMS patch.
For Xiaomi phones:
you can bypass carrier check by dialing a code.
To unlock VoLTE: open your phone app and dial *#*#86583#*#*
To unlock VoWifi: open your phone app and dial *#*#869434#*#*