Fix Sim Card not detected reboot error on Android phones
METHOD 1

There have been a few issues with Android phones losing connection to
the SIM card. Some issues have been with Android. Fortunately, there are a few fixes that seem to
address all of them. So if you’re seeing the sim card not detected
reboot error on your Android phone, this is for you.



Clear Android cache and data

Clearing the cache and data from the recovery menu seems to address a
wide range of issues. That makes it a good place to start with the sim
card one.



1. Navigate to Settings, Storage & USB, Cached data and select Clear cached data.

2. Power off the phone.

3. Boot the phone by holding the power and volume buttons. The Fastboot menu should appear.

4. Use the volume buttons to select Recovery and the power button to select it.

5. Let go of the power button but continue holding volume up and home until the Android logo appears. You should now be in the recovery menu.

6. Select Wipe cache partition with the volume down button and select it using the power button.



This seems to address the majority of sim card not detected reboot errors we have seen so far.



METHOD 2

The No SIM card error usually occurs when your Sim card is
not inserted properly. This is the most common reason for the error but
it is not the only reason why your phone may show this error. No SIM
card can mean problems with your device’s software too. There is a
chance that the SIM card is inserted properly but your device is not
reading it because of a software corruption. It may also point towards
your device’s inability to check for a network.

While we can
continue to explore more reasons for the problem, let us see how we can
resolve the issue so that you can use your phone as usual. A phone
showing this error shows that you don’t have the connectivity on your
phone completely. In other words, no phone calls, no mobile data, and no
messages. A smartphone may not be smart any longer with the no SIM card
installed error.

Ways to resolve the No SIM card error in Android
Solution 1: Restart your device
Let
us begin with the quickest and easiest way to solve the problem. When
your phone restarts, it refreshes most of the software which in turn
ensures that minor errors can be resolved by it. So restart your device
and allow it to connect to the network once again and check if your
Android device is reading the SIM. If your problem is solved then you
may not have to worry about the next solutions unless restarting the
device has been a temporary fix and you have had the problem return on
your device very frequently.

Solution 2: Check the SIM tray
Power off your device and remove the SIM card from your Android device.
There is a chance that dust built up on your phone and it is creating a
problem where the SIM comes in contact with your device’s internal
circuit. Blow out dust from the SIM tray and wipe your SIM gently
without damaging any of its parts. Return the SIM to the tray and power
on your device. Check if it is working now.

If the problem
persists, try using a different SIM card on your device if you have an
unlocked Android smartphone. In doing so, you will be able to confirm
whether it is the SIM that is at fault or if your device needs further
troubleshooting. If other SIM cards work fine on your device then your
SIM is the problem. Your device is completely capable of reading SIM
cards but a damaged SIM card may be causing the problem.

In this case, you must take the SIM card to your carrier.

Solution 3: Place the SIM securely on the tray
When
the SIM card is not placed securely, it may end up causing this error.
This is happening because every time your phone tries to connect to the
network, the SIM card loses its connection with the rest of the device
and causes an error. To fix this, you must apply pressure of some kind
to the card slot so that the SIM can stay put.

Some users have
found it easy to use tape to fix the SIM card to its position. Others
have used a piece of paper to apply pressure on the SIM card so it does
not move from its position.

Solution 4: Toggle Airplane Mode
Once you know that the SIM
card is not the problem, try toggling the Airplane mode on your device.
Many readers have found success in resolving the SIM error by toggling
the Airplane mode.

Pull down the notifications pane on your device
Look for Airplane mode (Flight mode) by scrolling left or right through the icons.
Tap on Airplane mode to switch it on
Tap on Enable on the warning message that you see on the screen.
Wait for 30 seconds and tap on Airplane mode again to switch it off
Once
the Airplane mode is off, your device will once again try to search for
network. If it is able to look for networks then your problem is
solved.

Solution 5: Set Network Mode to Auto
Sometimes, your network
mode may have been mistakenly set to the incorrect type which can create
a problem for users. When you have the wrong network type select, your
device may not be able to choose the right network and you may end up
seeing a SIM error on your device. To resolve it follow these steps:

Head to the Setting menu of your Android device
Look for more networks which will be under the Connections section. Tap on it.
Next, tap on Mobile Networks
Tap on Network mode
You
will get a pop-up menu with the different options that you can choose.
Make sure that you select the first option which says LTE/WCDMA/GSM
(auto connect).
Selecting this will make sure that your
device can automatically connect to the available network. If the wrong
option was selected, it may have led to an error which resulted in the
No SIM error on your device.

Solution 6: Choose the right network Operator
If
the network operator selected on your device is not the same as the
carrier you are using for your device, you may end up seeing this error.
To resolve it, follow these steps:

Go to the Settings menu of your device
Tap on More Networks and then go to Mobile Networks
Here, you must tap on Network Operators
Tap on the option that says Search Networks
Your
device will start searching for the available networks. Once the search
is completed you will see a list of network carriers on the screen. Make
sure you select the carrier that you are currently with. This will
ensure that your device is able to connect properly so that it does not
end up with SIM errors.

You can use these methods to resolve No SIM error on all Android devices

Solution 7: Reset your device to factory settings
When nothing else works,resetting your device to factory settings
can help resolve most of the problems on your device that arise from a
problematic software. Once your device is reset to factory settings, you
will lose all forms of data and it will also delete all the third party
apps on your device. This is why it is peremptory that you back up all the data on your device before you proceed with resetting your device to factory settings.

Head to the Settings menu of your device
Look for Backup and Restore and tap on it
Remember
to tap on Backup to ensure that you have all your app settings backed
up before you reset your device. Also, ensure that Automatic restore is
checked so that you can automatically restore all the settings once your
device is reset to factory settings.
Next, tap Reset phone.
Once you reset your device, it will automatically reboot your phone.
After the reboot is over, check if your device works now and if the
error is fixed.

What do I do if my phone got wet and now it shows no SIM card error?
If
you happened to drop your device in water and now it shows no SIM card
error, there is a chance that one of the circuits may have been damaged
because of the water. It is best to allow your phone to dry completely
before you use it. Remove the back cover of your device, provided it is
removable, take out the battery and the SIM and put the parts in a bag
or bowl of rice.

Allow it to dry in the bag of rice for 24 hours
before you put together all the parts of your device once again and
check if the problem is fixed. If the issue persists then you must take
it to a professional to check for physical damage.

What do I do if my phone shows this error after an update?
Software
updates are always meant to ensure that your device works better and
that it is using the most advanced technology available for the
hardware. This is why it is always advised to keep your phone updated.
However, if an update ends up causing a problem, there is a chance that
the old data may be creating the issue.

Restart your device to check if the problem is gone.
Reinsert
your SIM card after wiping the SIM card and the SIM tray to ensure
there are no dust particles on them. Also, make sure that the SIM does
not move in the tray.
Reset your device to factory settings after backing up the data and check if the problem is gone.


http://www.infinix.club/ng/forum/352/753030

the sim tray too might be having issues and if thats the case i advise you take your device to carl care.

Baseband error results in almost 60% of this fault in Android OS..... The clear indicator is that you'd get invalid imei if you check your phone imei with *#06#