Which mobile phone models does the remote control support? For iPhone, it supports iPhone 5 and above models, and the system supports the latest iOS 15. 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?" Can the remote control control all devices? The remote control can cover more than 90% of infrared devices currently on the market, and well-known brands are generally supported. If there is no adaptation process and it is not adapted, the Android phone can choose DIY to perform the learning function. Non-infrared devices cannot be controlled remotely, such as Bluetooth remote controls and 2.4GHz remote controls. How far is the remote control range? The distance between the remote control and the device depends on the reception condition of the electrical appliance. Actual measurements of commonly used devices range from 8 to 15 meters. This fully meets typical usage requirements. Does it need to be aligned with electrical appliances when using this product? The working principle of the mobile phone remote control is the same as that of the standard remote control that comes with the appliance. It needs to be aimed at the appliance and cannot be blocked during use. For iPhone, the remote control can be recognized after being plugged in, but why can't it be adapted and the indicator light does not flash? 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). Why can't the Android phone recognize the remote control after being plugged in or can't be used normally after being recognized? 1. If the phone is a Xiaomi or Huawei 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. Color: black Material: plastic Type: A: for Android Type C 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.