Hi,

We are sorry to hear this. The headset can be paired with multiple devices, but music can only be
only be played from 1 paired device at a time. The headset may be connected to
2 devices at the same time via Bluetooth. You can switch the music playback from one device to the other
without having to establish a new Bluetooth connection. If you want to play music from the other device
stop the music playback on the current device and start it by operating the other device.
If you set [Connect to 2 devices simultaneously] to [On], [Currently connected device] is displayed on the dashboard.

The device with the icon (speaker) is set as the music playback device. If you select a device on the
[Manage connected device] screen, you can change or set the music playback device.

If this is not the case, delete the headset's pairing information on the iPhone and then pair it again.
pairing again. Please refer to the operating instructions supplied with the iPhone for instructions on using the iPhone.

If you still need help, we recommend that you contact us directly. Visit our website to get in touch with us.

Sony Europe

No, I have iphone 14 pro max and 15 pro max and no problems with these devices. Try calling Apple Support.