The following might help with testing mobile devices.

• Battery

• Standby

• Accessibility Testing

• Interrupts

• Permissions

• Gestures

• Beta Testing

• Security

• Sensors

• Mobile Networks

Guides:

• ​Knott's Mobile Testing Cheat Sheet​

• ​Android User Interface Guidelines​

• ​iOS Human Interface Guidelines​

MNEMONICs

• ​I SLICED UP FUN​

• ​MOBILE APP TESTING​