How can Apple 5ca 1526 crack mobile 4g without jailbreaking?

There are two ways for Apple 5ca 1526 to unlock mobile 4g without jailbreaking:

The first one needs to escape from prison, and then spend 12 yuan to buy a super snow LTE assistant. This method can lock 4G at any time in the place covered by 4G. Relatively stable.

The second is to use traffic billing to forcibly lock the 4G network. This advantage is free, but the disadvantage is that you can't cut it casually, and sometimes you need to operate it repeatedly.

But you can't talk in either way, that is, you can't make a phone call, you can't answer the phone, you can only use it to surf the Internet and send text messages.