The G1 Android handset now accounts for 20 percent of T-Mobile's contract sales, the operator revealed in its latest financial results.
The results for 2008, released on Friday, showed a 3 percent overall year-on-year drop in T-Mobile's customer base to 16.8 million, with a 5.2 percent drop in pre-pay customer numbers to 12.7 million. Contract customer numbers, however, rose by 4.5 percent to 4 million, with mobile broadband device sales seeing a year-on-year increase of 250 percent.
"The successful launch of the Android-based G1 in October and the ongoing demand for mobile broadband services had a positive impact on the latter half of 2008," said Jim Hyde, T-Mobile UK's chief executive, in a statement.
The G1, which is currently still the only handset on the market to use Google's Android software stack, was launched exclusively on T-Mobile at the end of October 2008. The second Android phone, the Magic, will be launched sometime this spring by Vodafone, also on an exclusive basis. Both handsets are made by HTC.
According to T-Mobile, the G1 produced the operator's "best-selling launch of 2008".