10digi.com is a portal which allows users to buy a new SIM Card or port their existing number online. The users can avail SIM connections from operators such as Airtel, Vodafone, Idea and BSNL just by sitting at their home. They only need the Aadhar card for verification purpose. In addition, the delivery is free of charge and there is an instant activation. The entire process is time-saving and hassle-free.