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2. Schritt
Most damaged SIM-readers can be determined broken without disassembling the device. If the SIM problem persists despite external signs of damage, disassembling the device is in order.
Confirming the problem
  • Most damaged SIM-readers can be determined broken without disassembling the device. If the SIM problem persists despite external signs of damage, disassembling the device is in order.

  • Follow the steps in the P6 motherboard replacement guide Huawei Ascend P6-U06 Motherboard Replacement to disassemble the device. At this point, you should have a good view inside the sim slot.

  • Inspect the reader's contidition - preferably using a microscope, or at least a jeweler's loupe - poking at the contacts to see if anything is loose.

  • You can also measure continuity between the points marked in the crude schematic, however, this only tells you whether the motherboard is functional regarding the SIM ways.

  • At this point either there should be sightings of missing/bent pins inside the SIM reader, or the pads measure incorrectly, otherwise this guide can be potenionally making the problem worse.

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