It has been reported that iPhone may not recognize a micro-SIM card. This may result in receiving an error message stating “No SIM Card installed” or “Invalid SIM”. Use these troubleshooting steps to solve this issue.
Try a simple reboot before delving too deep into the problem.
iPhone 8 or later: Press and release Volume Up button, press and release Volume Down button, then press and hold the Power button until the Apple logo appears.
iPhone 7 & 7 Plus: press and hold Volume down and Power buttons simultaneously until the Apple logo appears.
iPhone 6S or earlier: Press and hold the Home button and Power buttons until the Apple logo appears.
Reseat SIM Card
Try reseating the SIM card with these steps:
Power the iPhone off completely.
Locate the eject hole on the outer frame of the device.
Using the SIM eject tool (or paper clip), insert it, and gently push the button inside.
The tray will eject.
Carefully remove the tray from the frame.
Remove the SIM card from the tray.
Ensure the SIM card is free of debris. Use a
Reseat the SIM card into the tray.
Gently insert the SIM card tray back into the iPhone.
Update the Software
Ensure that your iPhone has the latest version of the iOS software. You can check this by tapping Settings > General > Software Update.
Replace SIM Card
If you have tried all of the above steps and are still receiving the ‘No Service’ or ‘No SIM Card Installed’ messages on your iPhone, you will want to see if another SIM card will work with your device. You can get a new SIM card from your wireless provider.
Obsessed with tech since the early arrival of A/UX on Apple, Sudz (SK) is responsible for the editorial direction of AppleToolBox. He is based out of Los Angeles, CA.
Sudz specializes in covering all things macOS, having reviewed dozens of OS X and macOS developments over the years.
In a former life, Sudz worked helping Fortune 100 companies with their technology and business transformation aspirations.
iPhone 4S running on 5.1.1(9B206), I have the same problem since the last two days. Many SOFT reboots, back-up- restore options, have not helped. I get this message at-least 5 to 6 times a day. It is a really painful. Any support will be great.
My iPhone 4S running on 5.1.1(9B206) and it just had this problem. A soft reboot (hold down the power switch and home button simultaneously) fixed it. I then got a ‘SIM Failure’ error message. Verizon rep says not to worry, SIM card is not used in US, is for travel outside US. Phone now seems to be working OK.
Everytime I pull up my mail it said cannot connect server failed what do I do
I get no service very frequently on my iPhone 3GS it’s iOS is 5.1
The signals come for a moment then no service appears
Someone please help!
Ps I’ve been having this problem for a month
I also have the same problem with my ipad2 3G. I installed cydia to get blobs then downgraded to ios5.1.1 and it worked for ipad..
Same problem my iPhone 4 shows “no sim card installed “. What happen please give me solution
My problem also the same, but it is on my ipad2. How can I deal with it?
iPhone 4S running on 5.1.1(9B206), I have the same problem since the last two days. Many SOFT reboots, back-up- restore options, have not helped. I get this message at-least 5 to 6 times a day. It is a really painful. Any support will be great.
Same phone, same version of OS, same problem. Wish I’d stuck with Android.
hey
my iphones 3gs and i have on it 5.1.1 but typed no sevices please advice i have 6 days till now on this problem
your’s
islam
My iPhone 4S running on 5.1.1(9B206) and it just had this problem. A soft reboot (hold down the power switch and home button simultaneously) fixed it. I then got a ‘SIM Failure’ error message. Verizon rep says not to worry, SIM card is not used in US, is for travel outside US. Phone now seems to be working OK.
not completely fixed in latest firmware, had the No Service problem after coming out of airplane mode yesterday. Had to restart phone to fix