Customers joining long queues outside Reliance Jio stores here on Monday — the day of the full service launch — were often disappointed to find SIM cards unavailable. A visit to a few stores in Sarojini Nagar and RK Puram, in the south west, made it clear that demand for Reliance Jio SIMs far outstretched supply. Customers were seen running from one store to the next.

Few of the customers who spoke to Business Standard said though there was a paucity of SIMs at the Reliance Digital stores, local dealers had these. They were charging between Rs 300 and Rs 600. SIM cards ...