Forum Discussion
External User Sharing via Mobile Apps
I have the following Scenario: Internal documents are shared amongst staff using Sharepoint SubSites with Document Libraries. This works great We work with external contractors to submit thei...
IMHO, Office 365 groups will best work best for your scenario. It allows sharing your groups doc lib. Also O365 Group mobile app works well across devices.
More about O365 Groups
https://support.office.com/en-us/article/Learn-about-Office-365-Groups-b565caa1-5c40-40ef-9915-60fdb2d97fa2
More about Guest access in O365 groups
http://www.jijitechnologies.com/blogs/new-guest-access-feature-for-office365-groups
More about O365 Groups
https://support.office.com/en-us/article/Learn-about-Office-365-Groups-b565caa1-5c40-40ef-9915-60fdb2d97fa2
More about Guest access in O365 groups
http://www.jijitechnologies.com/blogs/new-guest-access-feature-for-office365-groups
Agree with Santosh...to add some more info. here, current SP App for Android does not provide any way to share documents