"अब आसानी से हिन्दी में अपने मोबाईल पर देवनागरी लिपि में लिखे" । अंग्रेजी या रोमन से नहीं।. The Panini Keypad is an intelligent dynamic keypad that offers you to type easy and fast in Hindi on your phone. This new technology constantly calculates and puts only 11 characters on the screen that you are most likely to type.