Lesson 1: Mobile Devices
Week of Tue, Sep 15 · lesson closes Mon, Sep 21
Take Meerk's quiz for Lesson 1
This lesson's items
Exact due times are in Canvas.
Watch — Professor Messer
Watch — Professor Messer: Mobile Devices (220-1201)
Free, independent educational resource. Not affiliated with or endorsed by CompTIA. Watch, then read the notes below.
Know these cold
- Laptop hardware: RAM (SO-DIMM), storage (M.2/NVMe), display (IPS/TN/OLED), battery (Li-ion).
- Mobile device connectors: USB-C (universal since iPhone 15+), Lightning (older Apple), Micro-USB (legacy).
- Mobile OS: Android (open-source Linux base), iOS (Apple proprietary, ARM Darwin kernel). Synchronization via cloud + cable.
Meerk's quiz — open the Lesson 1 gate
10 questions, no time limit. 85% on your first attempt in a 24-hour window opens the gate. Retakes inside the window are practice — they help you learn, they don't count. Work alone; the point is to know it, not to have seen it.
Dinner Table Question
Ask at home: Why do phones not have user-replaceable batteries anymore?
En español: ¿Por qué los teléfonos ya no tienen baterías que el usuario pueda reemplazar?