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  One Mobile Phone: Dual-mode Mobile Phone

GSM/CDMA dual-mode mobile phone: It refers to CDMA/GSM compatible mobile phone with two SIM card slots. The two SIM card slots on the mobile phone can be inserted with UIM card, Unicom SIM card, SIM card of other operator, of course, with the dual-mode card developed by China Unicom freely. When a SIM card is inserted, user can use the GSM network of the operator corresponding to the SIM card; when UIM card is inserted, CDMA network can be used; when dual-mode card is inserted, you can select any network from Unicom GSM/CDMA networks.

  Double Networks

User may switch over among three networks in two systems (Unicom CDMA, Unicom GSM, and GSM of other operator) at will.

  Multiple Enjoyment

1. More wonderful value-added service: While reserving original basic services, the user of original Unicom GMS network or the GSM user of originally other operator may additionally use the high-speed and wonderful value-added service provided by CDMA1X network.

2. Smooth global roaming: South Korea and North American counties mainly use CDMA technology while European countries mainly use GSM technology. The incapability of mutual automatic roaming between two mobile communication blocks (GSM and CDMA) indeed brings in tremendous difficulties for traveling abroad. The most important characteristic of World Wind is to support the free switchover between GSM and CDMA networks. Therefore, World Wind user can enjoy the communication service provided by foreign operating network signed GSM or CDMA roaming agreement with domestic operator when roam abroad. The countries and regions roamed will be the aggregation of the roaming areas of domestic GSM mobile phone and CDMA mobile phone, which certainly will be greater than the countries roamed by original single-mode mobile phone, thus really becoming free roaming globally with one mobile phone.

3. More perfect network coverage: No any mobile communication network can achieve 100% coverage; however, through the support of two networks and free switchover, blind area and blind spot will be greatly reduced.

4. More convenient to retain mobile phone number: Dual-mode user can use Unicom GSM and CDMA services with only one phone number. The GSM user of other operator, if using Unicom C-network service while retaining original phone number, can achieve what he or she wished just by combining original SIM card and UIM card in dual-mode mobile phone.