The Salesforce Field Service mobile app is a brand new way to bring the full power of Field Service management to your mobile workforce. Improve first visit resolution by arming employees with this best-in-class mobile solution. Built to be offline first, Field Service presents information in a clean and easy-to-use user interface and arms your workforce with the latest information with in-app notifications.
Backed by the Salesforce1 platform, this application lets you customize and extend the app to empower your mobile employees with whatever they need to easily resolve issues in the field.
Note: This application requires your Salesforce org to have Field Service. Individual users must be provisioned with Field Service Technician licenses to use this application. Please contact your Salesforce Account Executive for more information on purchasing Field Service and user licenses.
Features:

For users without access to Google Play, the app can be downloaded by following the instructions below (details may vary from device to device):
By downloading the APK made available on this webpage (the "Software"), you:
If you do not have such authority, are not an authorized User, or do not agree to these terms, you may not install or use the Software.
The Software allows Salesforce Field Service customers to use the Field Service service from Supported Devices. A "Supported Device" is a combination of a mobile device running Android software and an Android software version(s) that is supported by the Software. The Software is provided by salesforce.com as a component of the Field Service service. Neither you nor the Customer may rent, lease, lend, redistribute or sublicense the Software except that the Software may be distributed to authorized Users under the Master Subscription Agreement.
The Software on this webpage may not be the current version of the Software, and salesforce.com makes no representation that the Software will operate on your device. Salesforce.com may, at any time, remove the Software from this webpage, and may, at any time and without notice, restrict, interrupt or prevent use of the Software.
Except as and only to the extent permitted by applicable law, or by licensing terms governing use of open-sourced components included with the Software, neither you nor any other Customer personnel may copy, decompile, reverse engineer, disassemble, attempt to derive the source code of, decrypt, modify, or create derivative works of the Software or Software updates, or any part thereof. Any attempt to do so is a violation of the rights of salesforce.com and its licensors. If you or any other Customer personnel violate this restriction, you or they, and the Customer, may be subject to prosecution and damages.
The Software may not be downloaded or used in, or transported to, a country that is subject to a U.S. Government embargo, or has been designated by the U.S. Government as a "terrorist-supporting" country, and (ii) may not be used by anyone on any U.S. Government list of prohibited or restricted parties.
You acknowledge and agree to salesforce.com's privacy statement available at http://www.salesforce.com/company/privacy/, as may be amended from time to time.
Salesforce Field Service requires a device running Android OS 8.1 or higher. As this is a distribution outside of Google Play, you will be able to download and install the app, but it will not run on phones with Android OS lower than 8.1.