New Delhi, Nov. 3 -- Apple Inc. reported its best-ever India revenue in the September quarter, even as analysts say actual volumes may have declined on higher prices and fewer discount sales. The company's shares fell after the results and were headed for a weaker opening, as investors await signs of improving volumes.

Analysts tracking the sector said India volumes may have fallen by a fifth from a year earlier, at a time India's smartphone market is navigating a difficult patch. To be sure, the maker of iPhones and MacBooks does not report country-wise sales for India, and analysts track industry channels to estimate sales.

Navkendar Singh, associate vice-president at the India unit of market research firm International Data Corp. (ID...