According to various reports, the government's demonetisation drive and the cash crunch that followed has hit sales of mobile handsets, including those sold online.
Mr Cook's comments offer a glimpse of the gadget's performance during the holiday quarter, which is typically Apple's strongest.
Riding on the success of its flagship device OnePlus 3, Chinese smartphone maker OnePlus launched an upgraded version of its premium device -- OnePlus 3T -- which uses the most powerful version of the Qualcomm Snapdragon 821 processor (2.35 GHz) with 6GB RAM.
Nokia smartphones are poised for a comeback after former managers at the Finnish company licensed the handset brand from Microsoft and struck up partnerships with Google and phone manufacturer Foxconn.
In yet another attempt to take on photo sharing mobile service Snapchat, Facebook is working on a new feature which will showcase lists of curated content from publishers directly in the News Feed.
Months after it received flak for allegedly violating net neutrality with Free Basics, social networking giant Facebook is now testing a new model for public Wi-Fi deployments for offering quality internet access in rural parts of the country.
The hardware malfunction called "touch disease" exhibits display flickering or multi-touch issues in iPhone 6 Plus after being dropped multiple times on a hard surface.
Some of Google's unwitting users are learning a harsh lesson: If you violate the company's policies, it can abruptly cut you off from your Gmail account, online photos and other vital digital services.
A Samsung phone user in France, who said she had bought a Galaxy J5 phone last June on a website offering discounts, said the smartphone caught fire and exploded.
Alphabet Inc's venture capital arm CapitalG, earlier known as Google Capital, disclosed an investment in Snapchat by adding the social networking firm's logo to a page on its investment portfolio website.
Samsung Electronics Co aims to boost production of system chips at its Austin, Texas, facilities to meet growing demand.
Samsung Electronics Co Ltd Chief Executive Kwon Oh-hyun said the South Korean tech giant must improve, as it reels from the costly withdrawal of its Galaxy Note 7 smartphone.
About six months ago, people working on hardware and the voice-activated Google Assistant for the Pixel phone started sitting next to each other at the company's Mountain View, California headquarters, hammering out minute details of its first phone.
Apple has released a significant update to its professional video editing app Final Cut Pro X.
With the deal, Qualcomm is taking a big bet on the so-called Internet of Things (IoT), which enables everyday objects such as fridges and cars to communicate with each other.