Step‑by‑step fixes — proven workflows you can follow with the video
Track: Smartphone (iPhone & Android) · Duration: 42 min
Video lesson
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Course reader
Step‑by‑step fixes — proven workflows you can follow with the video
Smartphone workbook — software, build context, repair, troubleshooting, and step-by-step fixes next to the video.
Use the video as the moving diagram — follow these numbered flows; stop if smoke, heat, or swelling appears.
A — iPhone (general order)
- Force restart: volume up → volume down → hold side button until Apple logo (models vary — confirm for yours).
- Charge 30+ min on a known-good brick/cable.
- Recovery mode (Finder/iTunes) if update failed — restore cautions data if no backup.
- DFU only if trained — last resort before service.
- Settings → General → Transfer or Reset → Reset Network Settings for persistent Wi‑Fi/cell config issues.
B — Android (general order)
- Force restart (hold power 10–30s; OEM combos differ).
- Safe mode — hold power → long-press “Power off” → Safe mode — if stable, uninstall last apps.
- Clear cache for misbehaving app; then storage cleanup.
- Reset network / Bluetooth settings if radios misbehave.
- Factory reset only after backup — last software step before hardware suspicion.
C — Hardware-first symptoms
- Reseat SIM/eSIM profile; test second SIM if available.
- Clean charge port with wooden toothpick + compressed air — not metal picks.
- If screen lifts after drop — stop; avoid pressing on battery.
More tutorials: Open video search on YouTube
Lesson quiz
Each attempt uses a random set of questions with shuffled answer choices. Pass at 70% or higher to mark the lesson complete.