How to: Device Farm Tips
- [AWS Mobile blog](https://aws.amazon.com/blogs/mobile/) contains several examples of Device Farm usage for testing.
- Device Farm offers a free trial for users who want to evaluate their service.
- Device Farm offers two pricing models: Paying **per device minute** is useful for small usage levels or for situations where it‘s hard to predict usage amount. **Unmetered plans** are useful in situations where active usage is expected from the beginning.
- To minimize waiting time for device availability, one approach is to create several device pools with different devices, then randomly choose one of the unused device pools on every run.

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