Not sure if it is just the Phone 2a, but VoLTE seems to be buggy. Many people are experiencing the same issue, and especially in S.Korea, SK Telecom carrier users are experiencing 1) calldrop 2)unable to call others while picking up the call is working 3)many other volte call related problems. Hope it gets fixed soon as it is a critical one.
As Phone 2a officially launched in S.Korea, I thought there wouldn’t be a problem with registering the device but it requires additional work with the carrier services (registering the device ID, IMEI manually to make 5G connection work). It’s quite a hassle to do so, and I am quite dissapointed with Nothing as it seems the company has done zero communication testing in our country. If Nothing contacted carriers prior to the launch of the product, there wouldn’t have been a problem.
I seriousy hope Nothing to take a closer look at this issue and solve it asap.