03-15-2017 12:38 PM
What type of data connection does your pbix workbook have? Do you download the data into tables in the report data model, or does it have a direct cube or tabular connection? Data that is locally stored in the model should update immediately to the tiles when the underlying report is refreshed. Direct connected cube or tabular models are a little different since they cache the data for the tiles and refresh on an interval schedule that you can change.
03-15-2017 03:04 PM
All reporting (mobile app or web browser on a computer) is ran from the same data model from the .pbix model. If you can answer it, he above question is still relevant to how often the tiles (either on a mobile device or PBI.com in a web browser) will refresh.
03-23-2017 12:56 AM
Power BI Mobile App accesses Power BI Service same as computer or browser. Once you republish your reports, the changes will be updated on Power BI Mobile immediately.