What communication tools are there in America?

There are three main operators in the United States: Cingular(at & amp； T Wireless) NEXTEL(IDEN rental machine) T-Mobile, because some North America and Canada have tri-band mobile phones, you may need to rent a mobile phone when your country is crowded.

The following is the basic situation of each operator:

Operator name: Cingular(at & amp； T wireless)

Network code: 3 1038

Country code: 1

International prefix: 0 1 1 or+

Currency unit: RMB, (VAT rate varies from state to state)

Billing time: voice: 60s, SMS: message, GPRS:KB.

Busy hours: none

Charging principle: when you choose this operator's network, Cingular will be displayed on your mobile phone; You can also select a network by manually selecting a network.

Mobile phone type: Tri-band mobile phone (supporting GSM 1900)

Operator name: NEXTEL(IDEN)

Network code: 3 160 10

Country code: 1

International area code: 0 1 1

Monetary unit: RMB

Billing duration: voice: 1 sec, SMS: message.

Busy hours: none

Charging principle: When you choose the operator's network, NEXTEL will be displayed on your mobile phone; You can also select a network by manually selecting a network.

Cell phone type: You can only rent IDEN cell phones from NEXTEL in the business hall. This kind of mobile phone can be used in China and the United States. Just insert the SIM card with international roaming function into the mobile phone.

Operator name: T-Mobile

Network code: 3 10+200,210,220,230,240,250,260,160,270,310.

Country code: 1

International prefix: 0 1 1 or+

Monetary unit: yuan

Billing time: voice: 60 seconds, SMS: message.

Busy hours: none

Charging principle: When you choose the operator's network, TMO will be displayed on your mobile phone; You can also select a network by manually selecting a network.

Mobile phone type: Tri-band mobile phone (supporting GSM 1900)

The above is the situation when you use their carrier number segment.

It is convenient for you to go out in the country. China Mobile has introduced a unified tariff for international roaming, which is much cheaper than before. Specific rates can be found at /YDYw/ You Man/gsm.asp.