I have been tried manytime
Setting always revert when phone restart,
Phone detected as modem ( diagnostic modem also work well ), but
phone says "tethered data mode is unavailable" when trying to dial up
I have also tried changes nvm_data (NVM), but not happened difference also.
QPST cannot be applied to change MIP to SIP, ( always disconnect when reading of data),
is there any other way to be able to change it?