Section 1: Mobile Devices

- modular, commonly lithium ion or lithium ion polymer
- capacity diminishes over time

- easily replaced
- connected to motherboard with ribbon cable

upgrade using SO-DIMMs(small outline dial in-line memory modules), unless soldered

- hard drive, spinning magnetic disks
- SSD, silent/fast and no moving parts
- M.2, smaller form, easy to replace, more storage capacity, no SATA/data/power cables

hard drive - few screws
M.2 - one screw, similar to RAM
HD >> SSD - install operating system on SSD or clone/image HD

- wireless cards and functionality are built-in using mini PCI and express interfaces

facial recognition and fingerprint scan for enhanced security/authentication

data transfer between devices through short-range communication

- requires a backlight to shine through liquid crystals to display image
- low power, light, cheap
- difficult to replace/difficult to get true black

TN (Twisted Nematic) LCD
- The original LCD technology
- Fast response times (gaming!)
- Poor viewing angles - color shifts
• IPS (In Plane Switching) LCD
- Excellent color representation
- More expensive to produce than TN
• VA (Vertical Alignment) LCD
- A good compromise between TN and IPS
- Good color representation
- Slower response times than TN

- organic light-emitting diode
- thinner/lighter/more expensive than LCD
- no backlight, short life
- ex: tablets/smart phones

- top of display for laptops
- make sure to reconnect video components if replacing

- older laptop backlights are CCFL(cold cathode fluorescent lamp), requires higher voltage/power, thicker display
- LED is thinner and more energy-efficient

turns DC into AC

stylus, converts analog inputs into digital inputs

- Universal Serial Bus, primary wired connection
- type A, used for computers
- mini B, used in older devices
- micro B, used for mobile devices
- USB-C ex: display port/HDMI

- offers faster charging and reversible insertion

- DB9/DE9 used for RS232 signals
- used for modems, printers, mice, and networking
- replaced with USB
- ex: switches, routers, firewalls

- fast communication within a short range
- PAN (Personal Area Network)
- ex: earbuds/headsets/car audio systems

- own personal wireless router
- extends the cellular data network to all of your devices
- dependent on phone type and provider
- may require additional charges and data costs

- touchscreen pen / touch screen stylus / capacitive stylus
- activates the interface without actually touching it

wired connection with TRRS(tip-ring-ring-sleeve) connector

- enables external keyboard, mouse and desktop adapter cards
- extends existing laptop interfaces and adds additional functionality
- avoids cable issues

- similar to docking station
- doesn't have expansion card
- usually connects using USB
- quick transitions between locations

- Global System for Mobiles, worldwide coverage originally EU, 90% of the market
- used by AT&T/Tmobile
- uses SIM(Subscriber Identity Module) card from phone to phone
- utilizes multiplexing

- Code Division Multiple Access, everyone communicates at the same time
- each call has a different code
- used by Verizon/Sprint

- International Mobile Subscriber Identity, identifies user of a mobile network
- International Mobile Station Equipment Identity, identifies physical mobile device

- introduced in 1998
- speeds at several MBs
- enables features like GPS, streaming media

- combines GSM/CDMA, download speeds of 150MBs
- LTE-A(LTE Advanced) download speeds of 300MBs

- introduced in 2020, download speeds of 100-900MBs up to 10GBs
- can connect to IoT devices

- Preferred Roaming List, used by CDMA networks
- allows your phone to connect to the right tower

security process that allows connectivity between a device and a phone/tablet

- Global Positioning System created by U.S Department of Defense
- provides precise navigation and determines location based on longitude, latitude, and altitude but requires at least 4 satellites

- Mobile Device Management, allows admins to control configurations, security settings, and apps
- corporate email configuration and has power to allow or restrict app installation
- can enable screen lock, two-factor authentication, and biometrics

preconfigured settings, organizations require specific settings to be added including access to cloud-based services or synchronization services to ensure actions on one mobile device is reflected on other devices

- commonly used by orgs, synchronization between email, contacts, calendars, reminders, and notes
- allows seamless integration between mobile device and other platforms

- configuration setting for apple devices, allows users to choose what to upload and what remains local on their device
- syncs all apple devices ensuring data is up to date and can be easily restored on a new device

- users can manage data transfer preferences
- transfers over cellular networks or faster Wi-Fi networks