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Consider the following sentence:

I am developing an application to be installed on Android.

And this:

This has been a major flaw in Android...

To be clear I am unsure of the usage of "in" vs. "on". When should I use "in" and when to use "on"?

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This question is way too broad. But if you limit it to the two particular examples, the answer is: just memorize it. That's how native speakers learn it as well. A flaw is in something. Applications are installed on platforms. – RegDwighт Mar 2 '12 at 11:18

closed as not a real question by RegDwighт Mar 2 '12 at 11:18

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.

1 Answer

up vote 2 down vote accepted

Install software on a platform. Find defects in a program.

If you are developing an application to be installed in Android, then it's going to be incorporated into that software and form part of the platform.

If you find a major flaw on Android, you are not talking about Android itself, but something else which is running on that platform (and which works well on other platforms).

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