https://blog.wongcw.com/2021/02/02/ios-14-5%e5%b0%87%e5%9c%a8iphone-12%e6%a9%9f%e5%9e%8b%e4%b8%8a%e5%95%9f%e7%94%a8%e9%9b%99sim%e5%8d%a1%e6%a8%a1%e5%bc%8f%e4%b8%8b%e7%9a%845g%e5%8a%9f%e8%83%bd/
iOS 14.5將在iPhone 12機型上啟用雙SIM卡模式下的5G功能