Dear Sir
i am from India
i insert the JIO india SIM in the Mobile very first time it show VOLTE but when i update system in UMIDIGI Z PRO. V3.01_20170321
AFTER THAT voLTE is not working this this phone
yes previous firmware its working fine but after UMIDIGI Z V3.02_20170317 Update its not working i also tried with UMI Z but bouth device is for same issu
I am from India, I am having a similar issue but not exactly the same ...
I believe you are using JIO sim. I am using the same... My problem is :
I get incoming calls but ... No outgoing Calls ... [4G internet works ]
Bros, I don't have VoLTE in Singapore. But as I was playing around with the settings I saw the "enhanced LTE mode” in network settings. Not sure if that has anything to do with the issue.