That means that there is no sim inserted, or your phone is unable to read the card. This is the most commonplace factors for this issue.

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It disables calling, messaging, and mobile data, and connection to the network.

No sim card inserted. I inserted a new sim card and now it is asking me for a pin or unlock code to unlock it. There is a chance that the sim card is inserted correctly, but your device is not reading it because of software corruption. It may also point towards your devices inability to check for a network.
Over the past week it has repeatedly flashed up with a message saying no sim inserted then connects back to the network and again flashes saying the same thing. And try to unplug the sim card and plug it back to the sim card slot for several times. Follow the below steps to find out how to lock or unlock your sim card.
In this case, even if the sim card is inserted properly, your phone may also fail to read it. Make sure you are connected to a wifi network. If you feel that the sim card is damaged, visit the nearest service center and get a new sim card of the same number.
Try to reboot the mr600 with the sim card inserted into the router. There are various reasons why your android device wont read the sim card. A sim card lock protects your sim from being used on other mobile devices.
Otherwise, take a cloth and clean the sim card carefully. One way to test this is by inserting a sim card from another cell phone that you know works fine. Check for a carrier settings update.
Here's how to fix network locked sim card inserted; Remove your sim card from the sim card tray and then put the sim card back. If still the same, you can contact the retailer to get a new one cause the sim card may not attach the card slot perfectly.
Connect the samsung mobile to the computer and click on the 'repair android system'. This was a few days after updating to the latest oreo build. My sim card works in my partners phone, my phone is 100% unlocked and o2 have confirmed that my sim card is active but it's still showing no sim card, i have tried 2 other sim cards in my phone and they work perfectly so i literally have.
Above all, power off your cell phone. There are several reasons why your device might be locked when you insert a new sim card. Make sure to use the correct sizestandard, microsim, or.
If you are getting this message when inserting a sim card that belongs to a different carrier you can contact the previous network provider. How to install sim card proberly. However, it is not the only reason.
Note that the notification has to be currently visible before you'll see it in the select a notification page. You can try to apply some pressure to the slot check again if the slot hold the sim. Salvage your sim sometimes, the problem with an android phone that cannot read a sim card is because you might have flashed a custom rom or dropped your phone.
If an update is available, you'll see a prompt to select ok or update. Thus, please check for sim card and see whether it's making all the mess. If your iphone still says it has no sim, your sim card could have a hardware problem.
Some users report using airplane mode or flight mode is a solution to the no sim card inserted error. Remove the sim card tray with the help of the sim ejection tool. Sim card is not inserted proberly.
Take a close examination on sim card for any signs of damage like scratches. If you have a sim card inserted, the easiest fix for this issue is to restart your phone and make sure your sim card is placed properly. If you dont have a sim and will not be using one, using a notification blocking app will do the trick.
Hold the power button for 5 to 10 seconds and choose the restart option. Loose sim card slot will caused the card losing the connection with the reader of the device. And signed in with the google account associated with project fi.
Tried putting the card in a nexus 5x and it works fine. No sim card can mean problems with your devices software too. Test for a malfunctioning sim card.
Test out your sim card. Go to settings > general > about. Most of the no sim card error or sim card not detected occurs when the sim card is not inserted properly so that cell phone won't recognize sim card.
Remove and reseat the sim card. Whatever the reason, a solution needs to be found quickly when your phone says: Step 1 download and install reiboot for android on your computer, then launch it.
Tap on settings > tap on flight mode. Some possible causes could be that you didnt insert the sim card correctly or your android device is experiencing a software issue. There are a few issues with this option.
It also can be due to the problems of software in your handset. Hide the no sim notification & icon. If a soft reset failed to fix the problem and the sim card error persists, try to remove and reinstall the sim card on your phone.
Be it loose or improperly inserted, sim card is the major culprit responsible for such an issue. Open settings and go to apps, and clear the cache and data for the project fi app and google connectivity services. Another solution for fixing the no sim card installed error on your android phone is to turn on the flight mode and turn it off again.
When sim card is cannot be detected, there are other possible causes: Restart your iphone or ipad. Then, you should take the sim card out of the slot and replace sim card.
I've tried the old fashioned way if in doubt, pull the battery out or in this case turn it off and restart it, if tried taking sim in and out, i've made sure the sim or the slot isn't dusty and i've tried screaming at it nothing works.

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