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Possible Duplicate:
Monitor wifi usage?

Is there a way to have an alarm warn me every time I spent another 100MB and telling me the total I've spent on the last billing period to avoid going over my limit and into debt in Android?

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marked as duplicate by Al E. Dec 3 '11 at 4:57

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

It looks like NetCounter will do what you need

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I'm using Network Monitor. With this free app you can track 2G/3G and WiFi traffic as separate stats. Also you can set up warning message for each stat.

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