mobile devices
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
