The problem with the mobile industry is that it deals with an intangible service which is largely similar across major players. Most consumers cannot tell the difference between Vodafone and Orange, or AT&T and Verizon in the U.S., beyond the colors and the logos. I suspect neither can the companies.
What the global delivery model allows is, it allows you to take previously geographically core-located tasks, break them up into parts, send them around the world where the expertise and the cost structure exists, and then specify the means for reintegrating them.
Chinese brands will face many obstacles when marketing to Western consumers. Beyond the associations with poor quality and unsound environmental practices, they generally do not have the marketing capabilities or budgets to build powerful global brands.