Data fees from your phone company may apply when you download podcasts. Many podcast apps have settings to limit the number of downloads per show; for example, downloading only only the three newest episodes rather than all new episodes. Also you may be able to set your app to download only over WiFi rather than using your phone's data connection. Please check with the settings on your phone and the app you use for more information.
Follow the steps below to quickly subscribe to your creator’s RSS feed:
Here is an article covering different apps that work (or not).