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Package It is a, to deliver mobile apps to Android devices, file format that is used, 4 Push Notification: A push nolificahen, message, short, that can be sent to app users ever, when said user don't'fhave their mobile, diplhyad, applications open, messages, en' the home'sorcen d the device, The, are, 5. wireless, technolagy standard for, exchanging plata ove short distances, prom filed and mobile devces, Bluetooth: Bluetooth is a, 6 SCreenshot:- It is also referrcod to, as screen Gorab, Screen, Capture or print scrcen. Aácneenshdr, 6., by a Computer, sepresen, is'an imaje, laken, or, mobile ducethat i a visual, -tation of whatis being diaplayed., Teacher's Sign