Get optimized video clip and audio excellent on apps including FaceTime, Whatsapp and Zoom in situations of network congestion, when it matters most.基于帐号安全的考虑，密码一经设置将无法供您查看。若忘记了密码，请更改密码。透過行動條碼移動帳號時若發生問題，請參閱以行動條碼移動帳號時