RE: Hide activities tap in Dynmaics 365 mobile app
Hi Eman,
Forms in Dynamics 365 for phones use the Main form type. Entity behavior and business processes in Dynamics 365 for phones forms function similarly to forms in the web application, but with a flow tailored for a phone.
To further simplify forms, you can hide components from appearing in the phone app. You can hide tabs, sections, subgrids, fields, and charts.
For example, to hide the Details tab in the Contact form, click Settings > Customizations > Customize the System > Components > expand Entities > expand the Contact entity > Forms. Select the Contact form, then scroll down and click Details. Click Change Properties and clear the Available on phone check box to hide the Detail tab from appearing on the Contact form for phone users.
Refer this link for more info: technet.microsoft.com/.../dn531128.aspx
I hope this helps.
Thanks.