The following is the basic information of each operator:
Operator name: Cingular (at&; T Wireless)
Network code: 3138
Country code: 1
International prefix: 11 or +
Currency unit: RMB, (VAT Tax rates vary from state to state)
Billing time: voice: 6s, SMS: messages, GPRS:KB
Busy time: You can also select the network by manually selecting the network.
mobile phone type: tri-band mobile phone (supporting GSM19)
operator name: NEXTEL(IDEN)
network code: 3161
country code: 1
international prefix: 11
currency unit: RMB
billing time: voice: 1 second. You can also select the network by manually selecting the network.
mobile phone type: you can only rent IDEN mobile phones from NEXTEL Company in the United States in the business hall. This kind of mobile phone can be used in both China and the United States. Just insert the SIM card with international roaming function into the mobile phone.
operator name: T-Mobile
network code: 31+2, 21, 22, 23, 24, 25, 26, 16, 27, 31
country code: 1
international prefix: 11 or+< You can also select the network by manually selecting the network.
Mobile phone type: Tri-band mobile phone (supporting GSM19)
The above is the case when you use their carrier number segment over there
If you go abroad in a country, it is convenient now. China Mobile has launched a unified tariff for international roaming, which is much cheaper than before. You can log in to /YDYw/manyou/gsm.asp for specific rates. The above data are for 26.