update README FAQ

README.md

@@ -447,6 +447,20 @@ adb start-server
 adb devices
 ```
 
+如果仍然无法识别，请检查：
+1. USB 调试是否已开启
+2. 数据线是否支持数据传输（部分数据线仅支持充电）
+3. 手机上弹出的授权框是否已点击「允许」
+4. 尝试更换 USB 接口或数据线
+
+### 能打开应用，但无法点击
+
+部分机型需要同时开启两个调试选项才能正常使用：
+- **USB 调试**
+- **USB 调试（安全设置）**
+
+请在 `设置 → 开发者选项` 中检查这两个选项是否都已启用。
+
 ### 文本输入不工作
 
 1. 确保设备已安装 ADB Keyboard

README_en.md

@@ -440,6 +440,20 @@ adb start-server
 adb devices
 ```
 
+If the device is still not recognized, please check:
+1. Whether USB debugging is enabled
+2. Whether the USB cable supports data transfer (some cables only support charging)
+3. Whether you have tapped "Allow" on the authorization popup on your phone
+4. Try a different USB port or cable
+
+### Can Open Apps but Cannot Tap
+
+Some devices require both debugging options to be enabled:
+- **USB Debugging**
+- **USB Debugging (Security Settings)**
+
+Please check in `Settings → Developer Options` that both options are enabled.
+
 ### Text Input Not Working
 
 1. Ensure ADB Keyboard is installed on the device