mobile devices

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iPad Pro

-12.9 inch display -4 GB memory

iPad Mini

-7.9 inch display -2 GB memory

iPad Air

-9.7 inch display -2 GB memory

Android OS

-Google's Android -most widely used smartphone OS -Version 5: Lollipop -Version 6: Marshmallow

smartphone antivirus options

-McAfee -Norton -AVG

smartphone provider: Google

-Pixel and Pixel XL -quickly gaining market share

analog-digital converters

-allow smartphones to receive an analog sound wave, such as a person's voice, and digitize it so the phone can process it -they "sample" incoming sound waves and convert them to digital signals

mobile switching station

-also called mobile switching center, MSC server, or Mobile Telephone Switching Office -controls transmissions between cell phone towers and their base transceiver stations -connects your call with the mobile switching station of the person you're calling

base transceiver station

-also called radio base station -found at the base of the cell tower -broadcasts low-powered microwave signals through the tower antenna, creating "cells" of coverage -transmits cell phone signals to the mobile switching station

cell phone providers

-also called wireless service providers or mobile network operators -sell cellular service to subscribers -need physical capability like antennas, plus a spectrum of radio frequencies

cell phone bills include

-basic monthly charges for phone and data -equipment charges for things like new phones -taxes and surcharges

smartphone provider: Lenovo

-bought Motorola -Moto, Vibe, Z, Droid

tethering

-connecting digital devices -uses your cell phone's data plan

3G, 4G, LTE

-descriptions of network speeds -"G" = generation -"LTE" = long term evolution -LTE is fastest and 3G is slowest

smartphone provider: Blackberry

-famous for its physical keyboards -Leap, Z Series

smartphone memory

-have memory (RAM) and storage -most come with 1-2 GB of RAM -most come with 8-124 GB of storage

smartphone provider: Huawei

-major player in low-end cell phone markets -Ascend, Honor, Mate

smartphone provider: Xiaomi

-major player in low-end cell phone markets -Redmi, Mi Series

iPhone OS

-most widely used operating system for smartphones in the US -developed by Apple -easy to use

MMS (Multimedia Messaging Service)

-similar to email -for longer texts, images -messages are first sent to an MMS server, where messages are encoded and stored before being sent to recipient

digital signal processor

-small computer within your smartphone -analyzes sounds entering your phone through the analog/digital converter -reduces an unwanted noise, moderates speech volume, and even buffers signals to enhance phone call quality

SMS (Short Message Service)

-texting -limited to 160 characters -texts sent to an SMS center that forwards the unencrypted message to the recipient

roaming

-use other cellular networks besides your own -your provider must have roaming agreement with other network

smartphone provider: LG Electronics

G2, G Flex, Gx

syncing

copying files from a folder on one device to a folder on another device

what uses the most data?

streaming videos such as Netflix or YouTube


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