currently the option has: Is, is not, is empty, is not empty but it would be useful for 'contains field' & 'does not contain' this would mean you can filter part of the information - Eg when searching a mobile number instead of a landline under a contact field you can search > contains > 07

This would pull the contacts that have mobile phone contacts containg 07 instead of the full mobile phone number. - it speeds up search in a number of areas