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Welcome to Mobly

Mobly is a Python-based test framework that specializes in supporting test cases that require multiple devices, complex environments, or custom hardware setups.

Here are some example use cases:

  • P2P data transfer between two devices
  • Conference calls across three phones
  • Wearable device interacting with a phone
  • Internet-Of-Things devices interacting with each other
  • Testing RF characteristics of devices with special equipment
  • Testing LTE network by controlling phones, base stations, and eNBs

Mobly can support many different types of devices and equipment, and it's easy to plug your own device or custom equipment/service into Mobly.

Mobly comes with a set of libs to control common devices like Android devices.

While developed by Googlers, Mobly is not an official Google product.


Mobly is compatible with both python 3.4+ and python 2.7.

Mobly tests could run on the following platforms:

  • Ubuntu 14.04+
  • MacOS 10.6+
  • Windows 7+
Platform Build Status
Linux Linux Build Status
Windows Windows Build Status

System dependencies

  • adb (1.0.36+ recommended)
  • python2.7 or python3.4+
  • python-setuptools

If you use Python3, use pip3 and python3 (or python3.x) accordingly.


You can install the released package from pip

pip install mobly

or download the source then run to use the bleeding edge:

git clone
cd mobly
python install

You may need sudo for the above commands if your system has certain permission restrictions.


To get started with some simple tests, see the Mobly tutorial.

To get started running single-device Android instrumentation tests with Mobly, see the instrumentation runner tutorial.

Mobly Snippet

The Mobly Snippet projects let users better control Android devices.

  • Mobly Snippet Lib: used for triggering custom device-side code from host-side Mobly tests. You could use existing Android libraries like UI Automator and Espresso.
  • Mobly Bundled Snippets: a set of Snippets to allow Mobly tests to control Android devices by exposing a simplified version of the public Android API suitable for testing.