1. Ensure that the HDMI cable is securely connected to both the device and our projector. You can also try to connect them with another HDMI cable. Please try to connect your PC to our projector to confirm if the HDMI port works.
2. Disconnect the power supply to our projector. Wait for about 10-15 seconds, then plug them back in and turn them on. This can often resolve temporary connection issues.
3. Make sure that the projector is set to the correct input source for the HDMI port that the device is connected to.

While using this product, the power supply becomes hot.Based on the estimated international safety standards, plastic accessories such as adapters should not exceed a surface temperature of 77 degrees. Our power supply meets this requirement and is qualified for safe operation. In addition, we recommend keeping the power supply in a dry and well-ventilated area. Avoid placing it on the back or front of the projector, as this can impact the ventilation and potentially cause overheating.

1. Please ensure that the power cable is properly connected.
2. If the power cable is connected properly and the projector still doesn't turn on, please try connecting it to different outlets. This step will help us determine if the issue lies with the outlet or the projector itself.
3. If you have an additional power cable available at home, we recommend testing the projector with a different cable. By doing so, we can verify whether the problem is related to the power cable or the projector itself.
4. Feel free to contact us if the problem still exists.

1. Check the power source: Ensure that the projector is properly connected to a stable power source.
2. Check the ventilation: Ensure that the projector has proper ventilation and is not overheating. Make sure all air vents are clear of obstructions and that the projector is placed in a well-ventilated area. Overheating can sometimes cause devices to shut down unexpectedly.
3. If you have upgrade the firmware by downloading the it from etoeoffical website, please make sure that you have downloaded the right version.

It needs to be charged when you use it. It is not compatible with regular power banks that only have USB/Type C output. Instead, please utilize a powerhouse with AC output to charge the device whenever necessary.

1. Establish Bluetooth Connection: Make sure that the remote is connected so that the Bluetooth mode can work. (If your projector is E3 Pro/E2 Pro/D2 Pro)

2. Proper Aim and Alignment: The projector has one IR remote control sensor located at the front and back of the projector. The remote control can only be used either by pointing it directly at the IR sensor by reflecting the IR signal off of a wall/screen, making sure that there are no obstacles between the remote.

3. Check and Replace Batteries: If you encounter any issues with the remote control's functionality, replace them with fresh batteries. This will help ensure reliable performance.

1. The ventilation of the projector might be blocked. Move the stuff away and turns off the projector for half an hour to cool it down.
2. Make sure that nothing is blocking the ventilation when you turn on the projector again.
3. Turn on the projector again to see if the black spot still appears.
4. If the black spot still exits, go to the projector system and Settings>About to check the System Version and System Temperate, shoot a photo, and contact us.

1. Avoid setting the image size too large. The recommended viewing size ranges from 40 to 80 inches, and the suggested projection distance is between 3.54 feet and 7.08 feet.
2. Be cautious not to overdo the Keystone adjustment. Excessive adjustments of the keystone setting may impact the overall image quality.
3. Additionally, you have the option to configure the image mode and color temperature. To access this feature, simply press the second menu button, and a shortcut menu will appear. From there, you can adjust the image mode and color temperature settings according to your preferences.

If you have the projector D2/E2, please notice that they don't support mirror from streaming platform like Netflix, Prime Videos and other similar services as the copyright issues. You need to connect your deivces to the projector via the HDMI cable.

For other projectors like D2 Pro, D1 EVO, D2 EVO, E2 Pro, E3 Pro:

Please do these steps together to fix the problem:

1. Please make sure that the projector and phone are connected to the same network. For the best Wi-Fi performance, please use the 5G HZ band on your wireless router if available. And connect the projector and the phone to the 5G HZ Wi-Fi.

2. Disconnect the other device from the same network with the projector and the phone.

3. Try to put the projector as nearly as possible with the wireless router and the phone. Since another common cause of Wi-Fi interference is having an object that impedes the signal between the two devices. Thus wireless devices perform best when there is a direct line of sight between them.

1. Disconnect other devices from your soundbar. As other devices might try to connect with it and influence the connection to the projector.
2. Turn off other wireless connections close to the projector and Bluetooth signal.
3. Keep your distance from other Bluetooth devices to avoid interference.
4. Change the position or location of your device. It may need to be closer to the projector.
5. Disconnect other Bluetooth devices with the projector, as too muchBluetooth devices connected will interfere with the Bluetooth signal.6. Feel free to contact us if the problem still exists.

1. For the best Wi-Fi performance, please use the 5G HZ band on your wireless router if available.
2. Disconnect the other device from the same network with the projector.
3. Try to put the projector as nearly as possible with the wireless router and the phone. Since another common cause of Wi-Fi interference is having an object that impedes the signal between the two devices. Thus wireless devices perform best when there is a direct line of sight between them.
4. Restart the projector: Power off the projector completely, wait for a few seconds, and then turn it back on. Sometimes, a simple restart can help resolve connectivity issues. Restart the router.
5. Reset network settings: In the projector's settings menu, look for an option to reset network settings. This will clear any saved Wi-Fi configurations and allow you to set up the connection anew.
6. If the problem persists, please upgrade the projector to the newest version. Occasionally, firmware updates can address connectivity issues.

Due to copyright issues, videos on some platforms such as Netflix, Amazon Prime, and Disney+ are not allowed to be mirrored.

The D1 Projector can't support for mirror/casting the phone to the projector as it doesn't suppor WiFi connection. You need to connect it to the projector via the HDMI cable.

Please do these steps together to fix the problem when fail to cast:

1. Please make sure that the projector and the smart devices are connected to the same network. For the best Wi-Fi performance, please use the 5G HZ band on your wireless router if available. And connect the projector and the phone to the 5G HZ Wi-Fi.
2. Disconnect the other device from the same network with the projector and the phone.
3. Try to put the projector as nearly as possible with the wireless router and the smart device. Since another common cause of Wi-Fi interference is having an object that impedes the signal between the two devices. Thus wireless devices perform best when there is a direct line of sight between them.
4. Resart the projector, your smart devices or the router.

1. Go to Setting>Others;
2. Navigate to "Screen Saver";
3. Choose "off" or a timer for the screensaver.

Please ignore the notification as its the bug of the Android TV system and won't happen on every projector.