What is the phone number for idea customer service? You can contact the Idea National Helpline number at 1800-270-0000 which can be dialed from any mobile or landline number. Are there different idea postpaid customer care numbers?Where is idean based? With a team of more than 200 designers, technologists and strategists, Idean is based in Palo Alto, California, with studios in London, New York, Austin, Los Angeles, San Francisco, and Oslo, Bergen, and Stavanger. Idean was acquired by Capgemini on Feb 16, 2017.How do i complain about an idea mobile phone? Resolve your queries and complaints in no time by contacting Idea customer care through email or on call. You can call their customer care department toll free using your Idea number or using any other network as well. You can find information using USSD Code, Idea customer care number and idea customer care toll free number.Are there any idea postpaid customer care numbers? No, there are no idea postpaid customer care numbers. Same idea helpline numbers can be used to address postpaid related queries. Are there different idea prepaid customer care numbers? No, there are no idea prepaid customer care numbers.