Datasheet from a very similar looking microSD/SIM socket. https://www.molex.com/pdm_docs/sd/1041681620_sd.pdf
The socket has a switch that detects a card insertion. On the PinePhone schematics page 9 it shows SW connected to PF6 on the SOC. It may be what is damaged.
The leading edge of the microSD card is beveled to slide over the pins, the extender is not beveled. The leading edge may have caught on the switch.
On my phone the problem is the switch.
Testing continuity on a working phone the contacts are open when a card is not inserted and they close when the card is fully inserted, connecting S/W and T6.
![[Image: sd%2Bsocket.jpg]](https://1.bp.blogspot.com/--AKmP8j2nMs/YJRIBb6_qgI/AAAAAAACchk/uQrXRN222kAP7xl2XTSbq2X70qsELyIbgCLcBGAsYHQ/s707/sd%2Bsocket.jpg)
The metal shielding makes it impossible to see the inner workings of this switch. After fiddling with it, I now have the switch permanently shorted and now the card is detected. I can boot from SD again.
Also, I don't think the thickness of the extender damages the data pins, looking at it closely with the case off, I can see the pins making contact. The switch however I can't see, and may be damaged either by the thickness of the extender or the lack of a bevel on the leading edge.
The socket has a switch that detects a card insertion. On the PinePhone schematics page 9 it shows SW connected to PF6 on the SOC. It may be what is damaged.
The leading edge of the microSD card is beveled to slide over the pins, the extender is not beveled. The leading edge may have caught on the switch.
On my phone the problem is the switch.
Testing continuity on a working phone the contacts are open when a card is not inserted and they close when the card is fully inserted, connecting S/W and T6.
The metal shielding makes it impossible to see the inner workings of this switch. After fiddling with it, I now have the switch permanently shorted and now the card is detected. I can boot from SD again.
Also, I don't think the thickness of the extender damages the data pins, looking at it closely with the case off, I can see the pins making contact. The switch however I can't see, and may be damaged either by the thickness of the extender or the lack of a bevel on the leading edge.