Check which mobile phone card has the strongest signal, use which card, and then use the base station signal traffic package with the strongest signal.

Different places, different packages, different fees, and situations vary greatly.

Only with detailed information can the business office give a real reply. .

The kkvv method is as follows:

a: Call the customer service of three telecommunications companies, China Unicom, China Mobile, and China Telecom.

b: Then transfer to the manual service,

c: Ask for the number of the local business office, and then call the business office to ask and you will know.