Identifying Electronic Component and Symbol is very important rule when fixing mobile phones problems.

Be familiar of its circuit symbols below for easy troubleshooting guide.

Every Electronics Component has its own symbols visualizing it;s function in every circuit diagram...
This is a very big help especially when working on hardware problems. This Components Symbol is a standard guides when reading or writing service schematic diagram  with various mobile phone products.

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Credits:
electronicshub.org
scribd.com