T-Mobile, the mobile arm of Deutsche Telekom, said on Tuesday it would start selling its next device running Google Inc's Android operating system in early summer.

T-Mobile USA, the No. 4 U.S. mobile service, said it has sold more than a million G1 phones, made by HTC Corp since it started selling them last year.

T-Mobile is planning to offer the follow-on device to the T-Mobile G1 early this summer, the company said in an e-mailed statement that did not give any more details about the device.

The news comes days before Palm Inc is scheduled to launch its Pre phone and new webOS operating system, which is a rival to Android. Apple Inc is also expected to announce a new version of iPhone next week.

(Reporting by Sinead Carew; Editing by Richard Chang)

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