Hello, I've had my X4s for about 6 months. As of a week or so ago, there is static in the non-control side earpiece. I've noticed that you can hear it when they are powered off and charging, When they are powered on, and if they are powered off and you press the power button quickly but don't turn them on. Also, after fully charging and leaving them off the battery discharges on it's own. For example, I charged them 10 hours ago. Powered them on and received the "headphones fully charged" message then powered them off. Just powered them on and the battery is at 40%. I've tried resetting them and updating the firmware to no avail. Is there any other fix that can be recommended?
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