There are certain instances, wherein you will find your Sony Headphone turning on, and producing sound. It is likely to happen in either of the following cases: The headset cannot be charged when the computer goes into standby (sleep) or hibernation mode. In this case, change the computer settings, and start charging once again.

Tips on charging headphones (WF-1000XM4) | Sony UK

If the headset detects a problem while charging due to following causes, the indicator (red) may turn off or flash although charging is not complete. In this case, charge again within the charging temperature range. If the problem persists, consult your nearest Sony dealer. If the charging case becomes misaligned with the wireless charging pad, charging may slow down or stop, or the charging case may become hot. For details on how to properly set the charging case on the charging pad, refer to the charging pad manual. If the headset is not used for a long time, the rechargeable battery usage hours may be reduced. However, the battery life will improve after a few charges and discharges. If you store the headset for a long time, charge the battery once every 6 months to avoid over-discharge. If the headset is not used for a long time, the indicator (red) may not immediately light up when charging. Please wait a moment until the indicator lights up. Distortions appear when your Headphone has accumulated a significant extent of debris, dust, and dirt. As such, if you find such instances with your Sony Headphone, you need to clean it immediately.Customers may need to update their Sony | Headphones Connect app for this software to be activated. Sony Headphones come with an attached Micro-USD wire. It would help if you connected this cable to the charging case. It would help if you joined the other terminal of the chord to your computer. If the headset detects a problem while charging due to following causes, the indicator (red) may turn off, although charging is not complete. In this case, charge again within the charging temperature range. If the problem persists, consult your nearest Sony dealer. When using earbud tips other than the ones supplied, the headphones may not fully seat into the charging case and, therefore, may not correctly charge. In case you are using a Bluetooth Headphone, or noise-cancellation feature enabled headsets, it is crucial to ensure that the communication lines are always connected. Else, you may not be able to charge the Headphone. What should you do, if you find distortions with your Sony Headphones? Clean the Sony Headphone Connection:

Charging Cable Cord for Sony WH-1000XM3, WH ReadyWired USB Charging Cable Cord for Sony WH-1000XM3, WH

The noise canceling function cannot be used while charging or if kept connected to the computer after charging is complete. Sony Headphones are in high demand for its unique features, and as it produces the most excellent audio experience. Besides these headsets are highly durable, and you can pair with all types of modern devices. Passages underneath shall guide you about charging these headsets and various other points that are relevant to the context. Your guide about charging Sony Headsets

When connecting the headset to a computer, use only the supplied USB Type-C cable, and make sure to connect them directly. Charging will not be properly completed when the headset is connected through a USB hub. Time required for charging the empty battery to its full capacity. The time may be different depending on the conditions of use. Always automatically optimizing the noise canceling performance to suit the wearer and usage environment (Auto NC Optimizer) Cannot hear a person during a call/low voice from callers, your voice does not reach the person during a call/your voice is low on the caller’s side. Lights up in green for about 6 seconds when the lid of the charging case is opened or closed with the headphones are stored

Charging the headset - Sony Help Guide | Charging the headset - Sony

If the headset detects a problem while charging due to the following causes, the charging indicator (red) flashes. In this case, charge once again within the charging temperature range. If the problem persists, consult your nearest Sony dealer. The headset cannot be turned on, nor can the BLUETOOTH and noise canceling functions be used, during charging.

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If the headset is not used for a long time, the indicator (red) may not light up when you connect the micro-USB cable to charge the headset. In this case, do not disconnect the micro-USB cable from the headset: wait a few minutes until the indicator (red) lights up. Lights up in orange for about 6 seconds when the lid of the charging case is opened or closed with the headphones are stored

WH-1000XM3 | Help Guide | Charging the headset - Sony

You can also use the supplied USB Type-C cable to connect to a running computer to charge the headset. Use the supplied USB Type-C cable when charging. Charging may not be successful with cables other than the supplied USB Type-C cable. The headset cannot be charged when the computer is in standby (sleep) or hibernation mode. In this case, change the computer settings to charge the headset once again. By default, music resumes playing 30 seconds after your conversation ends in Speak-to-Chat mode. This timeframe can be customized using the Sony | Headphones Connect app.Connecting the headset to both a music player and a smartphone / mobile phone (multipoint connection) Time required for charging the empty battery to its full capacity. The charging time may differ depending on the conditions of use. If the headset detects a problem while charging due to the following causes, the indicator (red) flashes. In this case, charge once again within the charging temperature range. If the problem persists, consult with your Sony dealer. If you find your Headphone to produce distorted sound, you may reboot the device to overcome the problem. Ensure that you are connecting the Headphone to the source device in the right manner.