25-10-2016 10:25 PM
26-10-2016 03:09 PM
same goes here
28-10-2016 09:22 AM
Upgrading to VoLTE services should not impact your data usage, speed and quality. If you still have doubt, please:
a. Deactivate VoLTE feature
b. Restart your handset
c. Check and compare if there is significant 4G speed improvement