1. Which mobile phone models does the remote control support? Answer: For , it supports iphone5 and above models, and the system supports the latest IOS15 Android phones only need to support OTG (currently almost all Android phones support OTG). If you are not sure, you can search on Google: "Does the **mobile phone** model support OTG?" 2. Can the remote control control all ? Answer: The remote control can cover more than 90% of infrared currently on the market, and well-known are generally available. If there is no adaptation process and it is not adapted, the Android phone can choose DIY to perform the learning function. (For , it is not supported yet). Non-infrared cannot be controlled remotely, such as Bluetooth remote control and 2.4Ghz remote control. 3. How far is the remote control? Answer: The distance between the remote control and the machine depends on the reception condition of the electrical appliance. Actual measurements of commonly used include 8-15 meters. Completely meet . 4. Does it need to be aligned with electrical appliances when using this product? Answer: The working principle of the mobile phone remote control is the same as that of the remote control that comes with the appliance. It needs to be aimed at the appliance and cannot be blocked in the middle. 5.For , the remote control can be recognized after being plugged in, but why can't it be adapted and the indicator light does not flash? Answer: You can solve the problem by going to mobile phone settings - general - accessibility - turning off mono audio (the mono audio option is an auxiliary function for people with hearing impairment in one ear and will not affect normal calls) 6. Why can't the Android phone recognize the remote control after being plugged in or can't be used normally after being recognized? Answer: 1. If the phone is an or phone, you need to turn on the OTG switch in Settings-Other Settings- 2. If similar problems occur with other Android phones, you can open the remote control wizard-My-Settings in the upper right corner-Infrared driver settings-Device and select USB. Due to different batches, there may be differences in the appearance, color, and printing of the product, which will not affect its use. Colour:black Material:plastic type:C: for interface Package Contents: 1 x IR Transmitter with Case Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.