To enable iPhone support in the Budget Workflow App, a Device Channel entry has to be made in the host site (the SharePoint site hosting the App).
In the host site, go to "Site Settings" > "Look and Feel" > "Device Channels" and create a new item with the following column values:
- Active: Yes
- Name: iPhone
- Alias: iPhone
- Device Inclusion Rules: iPhone
Also ensure the default entry has not been deleted. It should have these values:
- Active: Yes
- Name: Default
- Alias: Default
Browse to your Budget Workflow App using your iPhone, Create a New Budget Request, and you will see that optimum date and keyboard controls are presented for the device.