Available in: Axsy Mobile for Salesforce, Axsy Field Service, Axsy Public Sector, Axsy Retail Execution

There is a minor difference in the UI for Android devices for Picklist Element selection. Unlike on iOS devices, where a user can tap anywhere on the Picklist box to expand it, a user needs to tap on the arrow to the right hand side of the Picklist box to expand it on an Android device. 

Please use this screen capture as a reference: