Added FAQ

FAQ.md

@@ -68,6 +68,7 @@ Related questions:
 * Delete an account/identity: Settings, tap Manual setup, tap Accounts/Identities, tap the account/identity, trash icon top right
 * Delete a folder: long press the folder in the folder list, Edit properties, trash icon top right
 * Undo send: Outbox, swipe the message in the list left or right
+* Delete a contact: please [see this FAQ](#user-content-faq171)
 * Store sent messages in the inbox: please [see this FAQ](#user-content-faq142)
 * Change system folders: Settings, tap Manual setup, tap Accounts, tap account, at the bottom
 * Export/import settings: Settings, navigation (left side) menu
@@ -305,6 +306,7 @@ Fonts, sizes, colors, etc should be material design whenever possible.
 * [(168) What is a spam block list?](#user-content-faq168)
 * [(169) Why does the app not start automatically?](#user-content-faq169)
 * [(170) Why can't folders be created with POP3?](#user-content-faq170)
+* [(171) How can I delete a contact?](#user-content-faq171)
 
 [I have another question.](#user-content-get-support)
 
@@ -3806,6 +3808,23 @@ so that there is always a copy of the messages on the email server.
 
 <br />
 
+<a name="faq171"></a>
+**(171) How can I delete a contact?**
+
+A contact can be stored in the Android address book or in the local contact database.
+
+When a contact is stored in the Android address book, you can use the Android contacts app to delete the contact.
+
+When a contact is store in the local contact database, you can delete it like this:
+
+* Go to the settings via the navigation menu (left side menu)
+* Go to the send settings tab page
+* Tap on the *Manage* button under *Suggest locally stored contacts*
+* Locate the contact (you can use the magnifier glass in the top action bar)
+* Long press the contact and select to delete it
+
+<br />
+
 <h2><a name="get-support"></a>Get support</h2>
 
 FairEmail is supported on Android smartphones and tablets and ChromeOS only.