Backward compatibility ngage j2me apps with 3650 or 7650

Hello,id like to buy some java games for my nokia ngage but my operator dont offer games for this phone. But when i see sizes of jar files there are same sizes for nokia3650,nokia7650 and ngage file. Is nokia ngage j2me backward compatible with 3650 or 7650: If yes which from these two (3650 or 7650) is preferred for ngage?THX

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Anything that's supported for 3650 should work as-is on the N-Gage. The N-Gage is based on the very same CPU, Symbian OS and Series 60 release as the 3650.