1. Check if restarting the device resolves the issue.

2. Check if the speaker is in AUX mode by short pressing the Mode button.

3. Check if you have connected the AUX cable properly and in the correct orientation on both ends.

4. Check if the problem persists even after using a different cable or different device to connect to the speaker.

1. Check if restarting the device resolves the issue.

2. Check if the speaker is in TF mode.

3. Check if your TF Card is functional and working on another media device.

4. Make sure that your music files are in the MP3 format on the card.

Press and hold the play and pause button to disconnect the Bluetooth.

1. Check if restarting the device resolves the issue.

2. Check if the charging cable connected to the speaker is not broken, use other charging cables to charge the speaker and ensure that the charger being used is not of 9V or 12V as that will damage the speaker. The red LED located on the speaker will indicate if the charging is happening or not.

3. Check if the charging port on the case is damaged or not.

4. Try factory-resetting the device.

1. Check if restarting the device resolves the issue.

2. Fully let the speaker discharge and then charge it fully again before use.

3. Check to see if the device has been properly connected, i.e. the jack is properly inserted into the device for AUX, Micro SD/ TF card is properly functioning for TF mode, properly paired for Bluetooth mode with blinking white LED.

4. Try connecting through a different connection mode or media device.

5. Check if the device was not subject to any mishandling or exposed to direct sunlight or hazards like fire.

• Check if connected device does not have any equalizer settings applied. Go to the sound settings of your phone and set the equalizer to normal/ default/ none/ 0. EQ settings navigation for top 9 popular mobile brands are as follows:

1. Vivo - https://www.vivoglobal.ph/questionlist/hi-fi-audio/​

   Go to i Music>press the icon at the left upper corner>select Audio effect>turn on Deep space sound effects>touch Equalizer in the bottom., then you can adjust Equalizer as you like.

   Note: Equalizer is supported in Funtouch OS 4.0 and higher version and can be adjusted only with the earphone plugged in.

2. Xiaomi - https://www.mi.com/global/support/faq/details/KA-497702/​

   Settings > Sound & vibration > Sound effects > Graphic equalizer, You can now choose preset styles or manually adjust the equalizer to your preference.

3. Samsung - https://www.samsung.com/levant/support/tv-audio-video/how-to-set-eq/​

   Settings > Sounds and vibration > Sound quality and effects > Equalizer, You can now either choose from pre-set EQ options (like "Music", "Bass", etc.) or manually adjust the frequency bands to fine-tune the sound.

4. Realme - https://c.realme.com/in/post-details/1397554219417985024​

   There 3 variations for EQ settings navigation according to the different UIs as mentioned below:

   A] Realme UI 6.0: Settings > System & updates > Sound > Equalizer.

   B] Realme UI 5.0, 4.0, 3.0: Settings > System/Additional settings > Sound > Equalizer.

   C] Realme UI 2.0: Settings > Convenience tools > Sound > Equalizer.

5. Oppo - https://www.youtube.com/watch?v=-gpyYtrw-58​

   Open the main Settings app on your phone > Go to Sound & vibration or a similar menu > Look for an Equalizer or Sound Effects option > The exact path can vary depending on the phone model and Android version > Enable it and choose from presets or manually adjust the sliders for different frequency bands. 

6. Apple - https://support.apple.com/en-in/guide/iphone/iph5643d2c85/ios​

   Settings > Music > EQ

7. Motorola - https://en-in.support.motorola.com/app/answers/detail/a_id/155724/~/enhance-sound​

   Go to Settings > Sound (& vibration) > Audio effects. (Or, open the Moto app and touch menu > Play > Audio effects) > Turn it On > to use only for headphones or connected devices, set the speaker equalizer to Flat.

8. Poco - https://www.mi.com/global/support/faq/details/KA-509973/#:~:text=1.,or%20adjust%20the%20equalizer%20manually.​

   Settings > Sound & Vibration/ Sound > Sound Effects / Equalizer > Graphic Equalizer

9. OnePlus - https://community.oneplus.com/thread/1111615​

   Settings > Sound & Vibration > Sound Quality & Effects > Audio Tuner or Audio Tuner > Equalizer Settings.

​

• Check if the problem still occurs if the device is moved closer and all obstacles in the middle are removed.

• Check the sound on different media players and different devices and if the distortion happens on all devices or only on specific ones.

• Check if the problem occurs at all levels of charging or only at low charging levels.

• Check if the speaker does not have water droplets, in case they do, use the blow dryer to dry out any water from a distance.

1. Check to see the microphone is not being blocked by any dust or obstruction.

2. Check to see if the microphone is being held at the adequate distance for it to be able to pick up the voice.

3. Check if the microphone was not exposed to any hazards like direct sunlight or fire.

4. Check if the microphone was not exposed to water above the resistance or dipped in any liquid.

5. The microphone is not functional using the AUX mode, check if the device is not in AUX mode.

6. Try factory-resetting the device.

1. Check if the controls do not work while connected to another device.

2. Check if the device is in AUX mode because the buttons will not work in AUX mode.

3. Check if the media player being used supports such controls and if the controls do not function on call or with other media players.

4. Check if the controls have been physically damaged or exposed to any hazards.

1. Check to see if the device has been properly charged first or not. Solid red LED on the speaker will indicate it is still being charged. This light will turn off once the speaker has been completely charged.

2. Check if the voltage of the charger is correct for the speaker or not.

3. Check by switching the speaker on manually, press and hold the power on button for at least 3 seconds.

4. Check if the device was not subject to any mishandling, broken wires or exposed to direct sunlight or hazards like fire

Ensure that you short press the “” button to turn on voice assistant.

• Short press the 'M' button to change the connectivity mode (BT/AUX/TF Card)

• Long press the "M" button to switch on or switch off the RGB light.

• Previous Track: Long press the '-' button to return to the previous track

• Next Track: Long press the '+' button to skip to the next track

• Increase volume : Short press the '+' button in steps to increase the volume

• Decrease Volume : Short press the '-' button in steps to decrease the volume

• Short press the forward '>' button to play/pause the track

• Short press the forward '>' button to answer/end an incoming call.

• Under Bluetooth connection status, if there is an incoming call, the user can short press the Play/Pause button to accept the call or long press the Play/Pause button to reject the call.

• Short press the Play/Pause button or operate on the mobile phone to end the call.

Note: If your smart phone is disconnected from the speaker due to the shut down or switching mode, the speaker will automatically reconnect to your smart phone when it is turned on or Bluetooth mode is on.

• Long press the forward '>' button to reject an incoming call.

• Double press the power button to activate the default voice assistant (Google voice assistant/Siri)

• Double press the 'M' button to disconnect the current connected device.

• Double press the 'M' button again to reconnect the speaker with the previously paired device.

1. Turn on the two Stone 352 Pro speakers that you require to be forged into one, both in Bluetooth mode. You only need to set one of the two units and follow the steps below-

2. Press and hold the forward '>' button on one of the speakers for about 2 seconds until you hear a beep.

3. Release the forward '>' button and wait for a few seconds for the two speakers to connect.

4. Enable Bluetooth on your mobile phone and search for “Stone 352 Pro” to pair.

5. Select “Stone 352 Pro” to play music through the two paired speakers.