In case your Comcast email not working on iPhone, using correct
Email configuration Settings will help you in fixing the trouble.
Email configuration Settings are:
• Incoming Mail Server Name: imap.comcast.net
• Incoming Mail Server Port Number:
Recommended: 993 with SSL ON
Only if Needed: 143 with SSL ON
• Outgoing Mail Server Name: smtp.comcast.net
• Outgoing Mail Server Port Number:
Recommended: 587 (SMTP)
Only if Needed: 465 (SMTPS)
• SSL Encryption: checked
• Authentication: XFINITY username and password required
If needed then dial toll free phone number of Comcast customer care support .