Accessing email from mobile phone.

Accessing email from mobile phone.

I am getting the message 

"Unable to connect to email server to verify your account information. No response from server." 

It is a new phone and I haven't accessed email on a mobile before. The settings the phone put in are:

Incoming Settings

Zoho Username:              my email address
IMAP server:                   imap.zoho.com
Security type:                  SSL
Port:                               993
IMAP path prefix             Optional

Outgoing settings

SMTP Server:                 smtp.zoho.com
Port                                465
Require sign in is ticked

If anyone can assist?