Reliance Jio's major subscriber losses continued for the third straight month with 7.96 million users leaving the telecom operator in September, even as the state-owned BSNL stood out as the lone gainer, data from the Telecom Regulatory Authority of India (Trai) showed on Thursday.Market leader Jio's subscriber loss has continued since July when the three private telecom operators - Jio, Bharti Airtel, and Vodafone Idea (Vi) - brought in a broad-based hike in tariffs.