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Your Samsung shows "No SIM card" or "Insert SIM card" even though the SIM is physically in the tray. Or it detects the SIM sometimes but not consistently. A SIM not being detected is a frustrating fault that cuts you off from calls, texts, and mobile data. Call 0723763173 — our Nairobi technicians fix SIM card detection faults regularly.
Why Is Your Samsung Not Detecting the SIM?
- SIM card not seated correctly — the tray wasn't fully inserted, or the SIM slipped in the tray
- Dirty SIM card contacts — oxidation on the gold contacts prevents proper electrical connection; gently clean with a dry cloth
- Damaged SIM card — the SIM itself has failed; test a known-working SIM or get a replacement from your network provider
- Damaged SIM tray — a bent tray doesn't seat the SIM firmly against the slot contacts
- Corroded or damaged SIM slot contacts — moisture or physical damage has damaged the spring contacts inside the SIM slot
- Software glitch — the modem software has lost the SIM registration; a restart or network settings reset may help
- Modem hardware fault — the baseband processor or SIM controller on the motherboard has failed
Quick Tests
Remove the SIM tray completely, clean the SIM contacts lightly, reinsert carefully, and restart. Test a different SIM card in your phone. Test your SIM card in a different phone. These three tests isolate whether the fault is the SIM, the phone, or a software glitch.
Our SIM Fault Repair
We clean and inspect the SIM slot, replace damaged trays, and diagnose modem-level faults if physical inspection checks out.
Call or WhatsApp: 0723763173 — Nairobi, same-day service.