It is not easy to estimate 3G market shares because a lot of contract details are not made public and a market share can be measured in many ways. 3G network vendors use measures like a number of contracts (including or excluding Letter Of Intents), a cumulative amount of contracts, an estimated amount of sold BTSs, a percentage of all calls through their equipment, a subscriber base using their systems and many more. Reliable information is hard to find and independent data even harder. In the 3G/UMTS race an early start is crucial to boost operators confidence and all companies will show as large market share as possible.
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