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App-based functionality where a mobile phone manufacturer can install a UPI app through over-the-air programming, that can be used for payment. Missed calls based: where a customer can use a dedicated merchant payment number by giving a missed call. The incoming authentication call will ask for PIN verification to complete the transaction.
WhatsApp (officially WhatsApp Messenger) is an American instant messaging (IM) and voice-over-IP (VoIP) service owned by technology conglomerate Meta. [13] It allows users to send text, voice messages and video messages, [14] make voice and video calls, and share images, documents, user locations, and other content.
iTunes Store is a digital marketplace selling songs, albums, music videos, ringtones and alert tones. It was launched by Apple Inc. on April 28, 2003 for Mac OS X, and on October 16, 2003 for Microsoft Windows.