When trying to log into the Salesforce Mobile App for Android and iOS, users may experience login or data issues if they do not have the API Enabled permission. API access allows the Salesforce Mobile App to communicate with your Salesforce org's data and services.
Without it, users may see:
1. At Full Site Setup, go to an existing Permission Set or Create Permission Sets.
2. Update the Permission Set to include API Enabled:
> Click on the System Permissions section
> Edit
> Checkmark API Enabled box
> Save.
3. Add the Connected Apps:
> Click on Permission Set Overview
> Assigned Connected Apps
> Edit
> From the 'Installed Connected Apps' section, click Salesforce for iOS and / or Salesforce for Android
> Add arrow to move to 'Enabled Connected Apps'
> Save.
4. Assign the Permission Set:
> For one mobile User, you can Assign Permission Sets to a Single User.
> For multiple mobile Users, you can use Permission Set Groups.
Salesforce Editions with API Access
Login problems in Salesforce for Android and iOS
Control Access and Security for the Salesforce Mobile App
000387054

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