“手机的摇杆”用英语怎么说？

Joystick
例句：
SE is the best cell phone maker in the world but the problem which i've faced the most in case of SE phones is the joystick non-responsiveness problem.
索爱是世界上最好的手机制造商，但是我遇到索爱手机的最大问题就是它的摇杆没有响应的问题

the joystick of the cellphone

摩托罗拉英文使用说明中对摇杆的图解标注为:navigation joystick with center select,意为 带中央确认功能的导航摇杆

不知这个答案满意否

rocker