I Haved publish my app on google play. But i have problem about my app is make devices hot. Even though my app capacity is just 9 mb on download in playstore. Why?
Check the CPU usage, have a look at these tips : construct.net/en/make-games/manuals/construct-3/tips-and-guides/performance-tips
It's normal that mobile devices warm up when they are doing intensive processing, and most games are intensive since they run both the CPU and GPU constantly.
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Especially check if you use any effects. You can probably get away with one or two simple ones but they tend to melt phones pretty quickly when overdone.