Brother Mobile Print/Scan for Brother iPrint&Scan - Manual (Page 114)

Scanning
110
9
Scan Settings
9
You can change the following scan settings when you use your mobile device to scan.
 Document Size
 Scan Type
 2-sided
1
1 Displayed only when your machine supports 2-sided scan.
NOTE
Only settings that can be changed are displayed.
a On the Scan Settings screen, tap the scan option that you want to change.
b Choose an option.
Repeat steps a and b if you want to change other options.