Mobile Connectivity Flashcards
1
Q
Your Phone is a Radio
A
- Baseband radio processor
- A network interface for your radio
- No Wifi or Bluetooth
- Has its own firmware & memory
- Extremely proprietary
- Real-time operating system
- Everything happens very quickly as needed
-The firmware can updated through the air
2
Q
Phone Updates
A
- PRL updates
- Preferred Roaming List
- CDMA networks (Verizon , Sprint)
- Contains radio bands, sub bands , & service provide id
- Allows phone to connect to right tower
- Updated Over the Air (OTA)
- PRI Updates
- Product release instruction
- Radio settings - ID numbers , network codes , etc
- Also updated via OTA
3
Q
IMEI & IMSI
A
- IMEI
- International Mobile Station Equipment Identity
- Identifies a physical mobile device
- Every phone has a different IMEI
- Used to allow or disallow access
- IMSI
- International Mobile subscriber Identity (SIM cards)
- Identifies user of mobile network
- Can be provisional in the SIM card
4
Q
Wireless Network
A
- Enable / Disable cellular , wifi , bluetooth independently
- Airplane mode , conserve battery
- iOS - settings / cellular
- Android = Settings / Wireless & Network Settings
- Windows Mobile = Settings / Wifi
5
Q
Bluetooth
A
- Short-range Personal Area Network
- About 10 meters
- Connect different devices
- Mouse , keyboard , headset , car , speakers
- Once paired , devices work together
- Connect & disconnect automatically
6
Q
Wireless / Cellular Data Network
A
- Tethering
- Turn your phone into a wifi hotspot
- Airplane Mode
- One button turns off all radios
- You can enable individual features
7
Q
VPN
A
- Virtual Private Network
- Turn your phone into a VPN endpoint
- Integrated into the phone OS
- May require some additional setup
- May support multi-factor authentication
- RSA secure ID
