The blue and yellow SIM cards are detected on all three SIM slots. The white one is only detected on the SIM1 and SIM2 slots. All three SIM cards work on every modem we have so we’re confident the issue is with the SIM3 slot of BPI-R4. We’ve experienced this issue on multiple boards.
Hi Bro, I found that when the SMI3 of R4 is inserted into the card holder without a SIM card in the card tray, the SIM card holder is easily damaged. I don’t know if you meet the same problem
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It sounds like a persistent issue with the SIM3 slot on the BPI-R4 boards. Testing on multiple boards suggests a design flaw.
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