If you get an alert that says Invalid SIM or No SIM Card installed, follow these steps. Make sure that you have an active plan with your wireless carrier. … Remove your SIM card from the SIM card tray and then put the SIM card back. Make sure that the SIM tray closes completely and isn’t loose.
Why is my phone saying there is no SIM card?
This usually happens when your SIM card is not installed properly, it is damaged, or your phone has software problems after a software update. Therefore, the phone will not recognize the SIM card and it says no sim card detected. … If these do not work, then you can go ahead and get your SIM card replaced.
Why is my phone says mobile network unavailable?
The problem can most likely be a lack of reception within your area. Please note that the mobile network not available on the Samsung galaxy can most likely be triggered by a bad signal/ reception, your Samsung galaxy coverage, your location, or SIM exhaustion.
How do I clean my SIM card on my phone?
Wiping Your Sim Card Clean. Use an eraser or cotton swab to remove dirt or dust. Gently rub the eraser or cotton swab along the gold contacts on your SIM card. Continue to make light strokes until your SIM card is clean.
How do you reset a SIM card?
Resetting SIM card through the phone’s settings
Insert the SIM card into your cell phone’s SIM card slot and place the back cover securely. Then, turn on the phone. Step 2. Go to the “Settings” menu and choose “Reset” from the list of options that are displayed.
Why is my SIM card locked?
The SIM card on your mobile phone will become locked if you enter an incorrect personal identification number (PIN) three times. To unlock it you must reset your PIN by entering your SIM card’s unique unlock key (also called a PIN unblocking key or PUK).
How can I fix my phone network problem?
Restart your device.
- Restart your device. It might sound simple, but sometimes that’s all it takes to fix a bad connection.
- If restarting doesn’t work, switch between Wi-Fi and mobile data: Open your Settings app “Wireless & networks” or “Connections”. …
- Try the troubleshooting steps below.
How do I know if my SIM card is bad?
If you encounter any of the issues listed below then you might have a SIM card that is not working properly anymore.
- Calls being interrupted, or messages delayed.
- Pin code requested without rebooting the phone.
- Sound quality decreasing.
- Battery life reduced.
- Phone getting warm.
What happens if you touch a SIM card?
If you touch that and your hand happened to be wet, having some chemicals, or rough, it may damage the surface of the chips and will lead to the SIM card not functioning properly anymore. … It may also cause some data to get distorted or to become incomplete, in case the entire SIM card did not get destroyed.