Issue Description
Phone shows No SIM, SIM not detected, or No service.
Common Causes
- Loose SIM
- Dirty SIM tray
- Network settings issue
Step-by-Step Solution
Step 1: Reinsert SIM Card
- Power OFF phone
- Remove SIM tray
- Clean SIM gently and reinsert
Step 2: Toggle Airplane Mode
- Turn ON for 30 seconds
- Turn OFF
Step 3: Reset Network Settings
- Settings → System → Reset → Reset Network Settings
Step 4: Test SIM in Another Phone
- Confirms SIM or phone issue
Explore Further
- Contact carrier for replacement SIM
Prevention & Best Practices
Avoid removing SIM while phone is ON.