I opted my phone into the beta, and ran into a very serious issue: calls made over VoLTE drop as soon as the ringing stops. No matter how many times the phone is rebooted, or SIM is ejected and re-inserted, whether safe mode is toggled on or off...no matter if the call is incoming or outgoing. Call drops as soon as it's supposed to have connected.
However, there's a fix for it (without a factory data reset): insert a SIM from a different carrier to force the "carrier configuration" software to kick in. Then, put the original SIM back in the phone, and let the "carrier configuration" kick in again. VoLTE is working again, and calls aren't getting dropped anymore.
