The document summarizes the key hardware components of mobile devices, including displays, CPUs, memory, storage, cameras, sensors, networking capabilities, and connectors. It discusses screen sizes and resolutions for Android and iOS devices and provides details on processors, memory, and GPUs used by Android and Apple phones. It also covers camera, network connectivity including 4G/5G, Bluetooth, NFC, and connectors such as Micro-USB, USB-C, and Lightning.

1. Lecture 02 Hardware of mobile devices

2. Mobile hardware overview
• Display, TouchScreen
• CPU/GPU (integrated), RAM
• Internal storage/SDCard (16GB-1TB)
• Imaging (Cameras), Audio (Microphone, speaker, audio port)
• Sensors
• Networking (GSM, 2G, 3G, 4G, 5G, WiFi, Bluetooth, IR, NFC)
• Wire connection (MicroUSB, USB-C, Lightning)
• Battery

4. Android screen sizes vary a lot

5. And Android screen resolutions…
DPI = dots per inch, кількість точок на дюйм

6. iPhone Screen sizes and resolutions

7. iPhone color reproduction

8. Use responsive design mode for Web

10. Вмикаємо “Show Develop menu in menu bar”

11. Заходимо в Enter Responsive Design
Mode

12. Chrome теж це вміє
1) відкриваємо Developer Tools

13. Chrome теж це вміє
2) Toggle Device Toolbar

14. Android CPUs and Memory
• 2..8 CPU Cores
• Instruction set: ARM, x86, 32-bit, 64-bit
• Memory 512 MB…8 GB
• GPU Adreno, Tegra, etc.

15. Typical Processor

16. Apple CPUs
Apple A6 - 32 nm 32 bit ARM 2-cores PowerVR SGX543MP3 GPU - L1 32KB+32KB,
L2 1MB iPhone 5
Apple A7 - 28 nm 64 bit ARM 2-cores PowerVR G6430 GPU L1 64KB+64KB L2 1MB,
L3 4MB - iPhone 5S, iPad Air, iPad mini 3
Apple A8 - 20 nm 64 bit ARM 2-cores PowerVR Series 6XT GX6450 GPU L1
64KB+64KB, L2 1 MB, L3 4MB
Apple A9 - 16 nm 64 bit ARM 2-cores PowerVR Series 7XT GT7600 GPU L1
64KB+64KB, L2 3MB, L3 8 MB
Apple A10 - 16 nm 64 bit ARM 4-cores L1 64KB+64KB/core, 6-cores GPU - iPhone 7
…
Apple A12X Bionic - 7 nm ARM 8 cores L1 128 KB +128KB/core - iPad Pro

17. Camera
• 2MP…21MP
• Frontal and rear
• 2-cameras (stereo, different focus distance)
• Depth camera
• RAW-support

18. Networking
• EDGE - 500 kbit/s
• 3G - up to 2 Mbit/s
• 4G - up to 1 Gbit/s
• 5G - up to 10 Gbit/s
• WiFi (802.11ac) - up to 7 Gbit/s (average speed 800 Mbit/s)
• Bluetooth - up to 25 Mbit/s (5.0 - up to 50 Mbit/s)
• NFC - up to 4 cm, 106-424 kbit/s, devices without batteries
• InfraRed, ZigBee, etc…

19. NFC modes
• NFC card emulation—enables NFC-enabled devices such as
smartphones to act like smart cards, allowing users to perform
transactions such as payment or ticketing.
• NFC reader/writer—enables NFC-enabled devices to read
information stored on inexpensive NFC tags embedded in labels or
smart posters.
• NFC peer-to-peer—enables two NFC-enabled devices to
communicate with each other to exchange information in an adhoc
fashion.

20. Other peripherals
• TouchScreen, Keyboard, Remote control
• Sensors: Accelerometer, Gyroscope,
Magnetometer, Barometer, GPS (A-GPS),
Photometer, Proximity sensor, Thermometer,
Fingerprint, Current Gear, Pose Sensor (6 DOF, can
utilise camera)

21. Що має обов’язково мати Android-сумісний пристрій?

22. Be ready for VR
• CPU minimum 2 cores, MUST provide an exclusive core to the
foreground application and MUST support the
Process.getExclusiveCores API to return the numbers of the cpu
cores that are exclusive to the top foreground application
• MUST support OpenGL ES 3.2, MUST support Vulkan Hardware
Level 0
• MUST be able to synchronize access to the shared front buffer such
that alternating-eye rendering of VR content at 60fps
• MUST support H.264 decoding at least 3840x2160@30fps- 40Mbps
• MUST support HardwarePropertiesManager.getDeviceTemperatures
API and return accurate values for skin temperature.

23. Connectors

24. Micro-USB

25. USB-C
USB-C is a 24-pin fully reversible-plug USB connector
system allowing transport of data and energy.[1]
The USB Type-C Specification 1.0 was published by the
USB Implementers Forum (USB-IF) and was finalized in
August 2014.[2] It was developed at roughly the same time as
the USB 3.1 specification.
If a product implements USB Type-C, it does not necessarily
support USB 3.1 or USB Power Delivery.[3][4]
All USB-C cables must support 3 A current (up to 60 W); cables
supporting high-power 5 A current (up to 100 W) must contain e-
marker chips programmed to identify the cable as being 5A
capable. USB Charging ports should also be clearly marked with
supported power wattage.[11]

27. Lightning
Lightning is a proprietary computer bus and power
connector created by Apple Inc. Introduced on
September 12, 2012, to replace its predecessor, the
30-pin dock connector, the Lightning connector is
used to connect Apple mobile devices like iPhones,
iPads, and iPods to host computers, external
monitors, cameras, USB battery chargers, and other
peripherals.
Apple offers various adapters which allow the
Lightning connector to be used with other interfaces,
such as 30-pin, USB, HDMI, VGA, and SD cards.