This article describes how to set up Exchange mailbox on Android Devices.
Necessary requirements
General information
Gmail app
Native app set up:
Samsung
HTC
Pixel
Galaxy s8
Gmail app set up
Note: most of the Android devices have default Gmail app installed.
To connect default Gmail app, use the following settings:
Select Exchange > click Exchange

Type in your primary email address and your password.
Tap Next.
Tap Manual setup.Type in the settings.
Username: type in your primary email address.
Password: mailbox password.
Client certificate: None
Server Name: You can find the server address sent in the original welcome email
Port: 443
Use Secure connection: SSL/TLS
Click Next.
Accept the security prompt.
Change synchronization scope (Company does not recommend synchronizing all the data for big mailboxes).
Set the account as default one if you want it to be your reply from the account.

Provide the description for the account (optional).
Finish the setup by tapping on Next button.
On some Android devices, there are only two fields for setting up an Exchange account: Email address and Password. Use the following settings to set up the account:
Email address: type in your primary email address
Password: your mailbox password
Tap Add Account
Enter the Server address in the new field that will appear and change the Email address field to your primary email address. Tap Next to finish the setup.
Note: if the 'Cannot connect to the server' error comes up during configuration, try to switch from Wi-Fi to your mobile network or vice versa.
Read the Knowledge article ActiveSync Errors On Android Devices for common ActiveSync issues on Android-powered devices.
Native app set up
Below you will find the instructions to connect native app for some Android devices to Exchange server:
Samsung
HTC
Samsung Device
Open Application drawer from the Home screen by swiping up and tap Settings.
Tap Add Account.
Choose Microsoft Exchange.
Note: if Exchange is not shown as an account type, proceed as follows:Select an available account type (for example, IMAP).
Tap Continue.
Tap the “?” icon.
Tap “Change account type”.
Select “Exchange”.
Type in your primary email address and your password. Tap Next
Note: If the settings are populated incorrectly, tap Manual setup.

Type in the settings. You can find all the settings here:
Email address: type in your email address
Domain\Username: type in EXCH domain\Canonical user name
Note: You can request this from the technical support team.Password: mailbox password
Exchange server: You can find the server address sent in the original welcome email
Use Secure connection (SSL): checked
Use client certificate: not checked

Click Next.
Accept the security prompt.
HTC Device
From the Home Screen, select Settings.

Choose Accounts & sync > select Add Account option.
Choose Exchange ActiveSync for HTC.
Type in your primary email address and your password. Tap Next
Note: If the settings are populated incorrectly, tap Manual setup.

Type in the settings. You can find all the settings here:
Domain: leave the field blank
Username: type in your primary email address
Password: mailbox password
Server Name: You can find the server address sent in the original welcome email
Use Secure connection (SSL): checked

Click Next.html
Accept the security prompt.
Pixel Device
Open Application drawer from the Home screen by swiping up and tap Settings

Tap Accounts, then Add Account.

Choose Exchange.

Type in your primary email address and your password.
Type in the server settings. You can find all the settings here:
Domain\Username: EXCH***\CanonicalName
Note: You can request this from the technical support team.Password: mailbox password
Server name: You can find the server address sent in the original welcome email
Port: 443
Security type: SSL/TLS

Click Next.
Galaxy s8 Device
Select Samsung from the Home Screen of your Android device
Select Email from the App list
Enter your Email address and Password. Select manual setup.
Select Microsoft Exchange ActiveSync
Enter Username and Exchange Server address. Select sign in
Select ok for your organization to remotely manage your device
Select Activate
Your email is now ready to be used on your device