Guyz I flashed Rr5.8.3 volte. Official ROM its build date is 26 June,2017. . In the steps. First full wipe. Cache,dalvik cache,system,data ,internal , then. I flashed this ROM then Volte modem patch then gapps. A day later. But the problem is. That I can't get volte calls. Through My jio sim. As whenever I try to call. It disconnects.
Can somebody helps me to solve this problem .
At XDA. A senior member was talking that I should flash volte modem through fastboot again and then do a clean flash of ROM ,then gapps and then Volte modem again. In the steps. Resp.
Please help me coz I don't know how to clean flash