what does no sim card mean on android
If they are clean them. And has no service whatsoever.
Restart your iPhone or iPad.

. Try to pull out your SIM card from your Android phone or iPhone and then pull it back in. This translates to not being able to use your phone as you usually do. Also check if the pin is not damaged.
Examine the SIM connector. The SIM card has been deactivated by your service provider since you asked to transfer your number to a new SIM card. In this video I show you how to fix the error message NO SIM Card or Invalid SIM.
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Wipe the connector gently to remove the dirt. So you should look into this as well. If at any time you turned on your phone and received a notification saying Invalid SIM Card No SIM Card or SIM card not detected then you can be sure that your SIM is not working properly.
If it doesnt remove the SIM and check if the card or the slot is dirty. The new SIM card isnt placed correctly in your phones SIM tray. Pull out SIM and Reset It.
The SIM card is not activated. Reinsert the SIM card after wiping the SIM card and SIM card tray to make sure they are free of dust particles. Just remove the SIM wait for half a minute and then reset it.
This card allows subscribers to use their mobile devices to receive calls send SMS messages or connect to mobile internet services. SIM slot and connector sometimes accumulate dust over them causing the device not to read the card properly. Remember that the SIM card Subscriber Identity Module houses.
A SIM card also called a subscriber identity module or subscriber identification module is a small memory card that contains unique information that identifies it to a specific mobile network. Remove your iPhone SIM card or iPad SIM card from the SIM card tray and then put the SIM card back. The carrier service providers server is temperarily down or unavailable at the moment and SIM cannot communicate with the server.
Restart the PC and see if it can detect the SIM card. If your phone is not detecting the SIM card this video will h. If your SIM card is not installed properly or the card tray is loose this fix can be useful.
Make sure that the SIM tray closes completely and isnt loose. If an update is available youll see a prompt to select OK or Update. A broken pin may also cause a problem of no sim card detected on an android phone.
Most times I change the batt and it gos away some times I need to run a batt down to 90 before it gos away and works. Check for a carrier settings update. If your iPhone still doesnt recognize the SIM try the all-purpose fix for many iPhone problems.
After the data is backed up reset the device to factory settings and check if the problem disappears. Blowing into the slot is probably OK but a shot of compressed air is always best. Today the phone is now saying invalid battery or no usim card.
Go to Settings General About. Also make sure that the SIM card does not move in the tray.
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