How to test crashes in Android for multiple devices?

We are using Fabric for tracking crashlytics. Daily we receive crash report, those are related to specific devices.

My question is how to avoid crashes in Android, if it is occurred how can I test it. Because most of the crashes are related to Device specific and Network Specific.

• Is there any tool to identify and test crashes before it is moved to production.
• Is there any way to test app in different devices for different functionalities.