1. For Tik Tok, video scroll remote: Use this remote shutter in Tiktok. Going up or down the video, playing and pause, etc. Check your mobile phone camera to take pictures. Note: Open the auxiliary touch before using iOS devices must open settings> Accessibility> Touch>. Please read our guide and scan the QR code to watch the processing methods before use. Supports feet control distance up to 33. Please replace it to the left/right page translation before using the page translation mode of the e-book application. Note: This product does not support Kindle devices. Matching Bdenen: Open the Settings of iOS devices> Accessibility> Touch> Open the assistant touch before using it. Please read our guide and scan the QR code to watch the processing methods before using it. Most Android phone: You just need to connect Bluetooth and you can use it later. Note: Since there are many mobile phone models in the market, the product cannot be tested in all. If you encounter an unusable phone model, please us, we will give you the most satisfactory solution! Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.