The following commentary comes from an independent investor or market observer as part of TheStreet's guest contributor program, which is separate from the company's news coverage.NEW YORK ( Trefis) -- China's second largest wireless service provider, China Unicom ( CHU), said last week that it added 3.23 million subscribers in January that took its total tally past the 200 million mark. The company now has about 203 million mobile subscribers, up 1.62% from the prior month. The debut of Apple's ( AAPL) iPhone 4S in China helped China Unicom add more than 3 million 3G subscribers, which accounted for almost 95% of the total net additions. China Mobile ( CHL) and China Telecom ( CHA) also released their monthly subscriber adds. Both reported a growing number of 3G subscriber additions, though they fell well short of China Unicom's net 3G adds.