Uninor is well known Indian telecommunications company, serving millions of subscribers all over the world. It is the second largest wireless mobile telecom comapny in the world. The company came out by alliance of two major companies, Telenor Group and Unitech Group. Telenor Group is a telecommunications group of Norway and on the other hand, Unitech Group is a real estate company of India. The company was established in 2009 offering services of mobile network and wireless internet. Uninor is headquartered in Indian city Haryana of Gurgaon. Uninor came into existence in 2009 initially launched to target the youth. In initial perio, the company carried its operation in just eight circles in India; later on, in 2010, the company subscribers has crossed 40 million in India. In 2011, the company came with slogan “Pay Less and Talk More.”, and started numerous new services. The company uses GSM technology in its voice and data services and has been serving the base of more than 3 crore subscribers in India. Uninor covers over 13 telecom circles in the country and has introduced various telecom service to its customers. The services of Uninor has spread over numerous other states of India like Uttar Pradesh, Uttarkhand, Bihar, Jharkhand, Maharashtra, Goa, Gujarat and Andhra Pradesh. The company has been in association with many companies to cater its IT and infrastructure needs such as Alcatel-Lucent, Huawei, Telcordia,Wipro, VIOM etc. Uninor has the large network of distributors and retail outlets in its zones. Its circle offices are located in the cities like Hyderabad, Patna, Lucknow, Noida, Pune and Ahmedabad. The online recharge facility is also available on its website, uninor.in. The customer care number of the uninor is 121 and 198 (from uninor phone). The postal and official address, email address and phone number (helpline) of uninor mumbai service center is given below. The helpline of uninor mumbai service center may or may not be toll free.