6 Ways To Fix iPhone says No SIM issue – iPhone 4/4S

Many Apple users faced this issue. iPhone says no SIM card available after dropped or update. This problem mostly happened on iPhone 4, 4S (Sprint, Verizon, and At&T).
Don’t worry this issue might be happened because of the slow iPhone, some wrong settings or software bug.
Fix 1: Do iOS update
Update your iPhone to latest iOS. Update iPhone 4 or iPhone 4S to iOS 7 (do not update to iOS 8. Because it slows down your mobile).
Fix 2: Turn ON/OFF Airplane mode
Go to iPhone Settings and turn on Airplane mode. Wait 1 or 2 minutes then turn off Airplane mode.
Do the same thing 3 or 4 times. It will fix no SIM card problem.
Fix 3: Reboot your iPhone

  1. Press and hold the lock button.
  2. You will see the slider. Drag the slider to turn off your mobile.
  3. Then turn on your iPhone.

Fix 4: Reset Network Settings

  1. Go to Settings->General->Reset.
  2. Tap “Reset Network Settings”.
  3. Enter the Passcode if required and tap “Reset Network Settings” in the pop-up box.

Note: This action will reset all Wi-Fi Networks & Passwords, APN & VPN Settings, and Cellular Settings of your iPhone.
Fix 5: Restore your Phone
Before reset your iPhone to Factory Settings, backup your device. Because this action will Erase all data from your device.
To back up your device,

  1. Connect your phone to Wi-Fi or Data network.
  2. Launch Settings->Apple ID (your name)->iCloud->iCloud Backup.
  3. Make sure that iCloud Backup is turned on. Tap “Back Up Now”.

Factory Reset/Restore

  1. Go to Settings->General->Reset.
  2. Tap “Erase All Contents and Settings”.
  3. A pop-up box will appear with three options: Back Up Then Erase, Erase Now, and Cancel.
  4. If you want to backup your device, tap “Back Up Then Erase”.
  5. If you have already taken a Backup, tap “Erase Now”.

Then restore your phone From iCloud and iTunes Backup.
Fix 6: Clean your iPhone SIM tray
Sometime this issue might be happened because of the dust. So clean iPhone SIM tray using air.
Cut your SIM card to Nano SIM card size using SIM card cutter.
Also, Suggest your ideas to fix this issue.

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