Troubleshooting — narrow the problem (software vs hardware)
Track: Smartphone (iPhone & Android) · Duration: 36 min
Video lesson
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Course reader
Troubleshooting — narrow the problem (software vs hardware)
Smartphone workbook — software, build context, repair, troubleshooting, and step-by-step fixes next to the video.
Method. Split software vs hardware before ordering parts. The video pairs with this decision tree mindset.
Quick branches
- Dead / no power: try known-good cable + brick; force restart; if still dead — charge port vs battery vs board (often shop).
- Boot loop after drop: suspect loose display/camera flex; after water — power off, do not charge until dry assessment.
- Touch only dead: digitizer vs connector vs software — narrow in safe mode (Android) / isolate with external display if available.
- Overheating: bad app, bad cell, or thermal paste/pump-out on some designs — check battery health first.
Storage & battery (still common)
- Offload media; clear cache (Android) where safe; Battery health (iOS) / battery stats (Android).
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.