Google-backed mobile OS system Android is facing delays in its rollout, after handset companies and operators are having trouble integrating the system…the original launch with T-Mobile USA was scheduled for second half of this year, but has now been delayed to late Q4, this WSJ story says. “Wireless carriers throughout the industry are confronting challenges as they seek to customize the Android software—which includes an operating system and programs that work with it—to promote their own Internet services. Some handset makers are taking longer than they thought to integrate Android, test it and build custom user interfaces to meet carrier specifications.”

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T-Mob expects to deliver an Android-powered phone Q4, but that launch is taking up so much of Google’s attention and resources that Sprint (NYSE: S) Nextel, which had hoped to launch an Android phone this year, won’t be able to, the story says citing sources. Sprint is now considering scrapping plans for its #G Android phone, and plans on developing one that will work on the faster WiMax network, the story says. China Mobile’s launch will also be delayed until late this year or early 2009.

Of course it is still too early to count out Google (NSDQ: GOOG). Rallying many different hardware, service and software providers has never been easy in the mobile ecosystem, and just because Google comes along doesn’t mean anyone starts behaving. Meanwhile, Apple (NSDQ: AAPL), that’s another story…