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About product and suppliers:
        Alibaba.com offers 42,688 quad core phone products. About 77% of these are mobile phones, 1% are other mobile phone accessories, and 1% are earphone & headphone. 

A wide variety of quad core phone options are available to you, such as free samples, paid samples. 

There are 42,688 quad core phone suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of quad core phone respectively. 

Quad core phone products are most popular in North America, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 3,228 with ISO9001, 1,878 with Other, and 885 with ISO/TS16949 certification.