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?
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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.
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.