Lenovo owned company Motorola is rolling out a special maintenance update that the company says fixes an issue that causes one-way audio following emergency dialling on some of its devices, including the first and second generation of Moto X, Nexus 6, Droid Turbo, Droid Ultra, Moto Maxx/Turbo, and Moto X Pro.
The company explains that the issue raises its ugly head when a user having an encrypted phone with “PIN to start” enabled tries to power on the device to place an emergency call using the emergency dial short-cut option that is presented before the boot PIN is entered.
"In this situation, the call will be connected, but with audio only in one direction," Motorola says. "The phone user will be able to hear the dispatcher, but the dispatcher will not be able to hear the phone user."
Meanwhile, those awaiting the update are being advised to either keep their phone powered on, or allow it to boot completely before placing the call.