IMEI identifier and how it works?
What is IMEI and how does it work?
How does the IMEI work?
How to find the Mobile IMEI?
Is it possible to remove the IMEI?
Change phone IMEI?
IMEI (International Mobile Terminal Identity, Have) is a unique code written in the phone's firmware to identify it on cellular networks: GSM, WCDMA and IDEN. Assigned to all mobile phones and some satellite models at the production stage and consists of 15 digits.
What is IMEI and how does it work?
IMEI is a unique identification number for each phone or smartphone. It consists of 14 decimal digits and a check digit. The code contains information about the serial number of the device, its model and origin. So the first 8 digits are called TAC (Type Approval Code) and they talk about the model of the device and its place of origin. The rest of the IMEI is the serial number of the device, which is determined by the manufacturer using the so-called Luna algorithm, with a check digit assigned at the end.
There is the IMEISV (International Mobile Terminal Identity and Software Version number), which already consists of 16 digits. In addition to providing a unique ID for each phone, it allows you to match the version of software authorized by the operator. In turn, the services available directly to this device depend on the software.
In 2002, representatives of large foreign cell phone operators prepared information stating that the IMEI could be changed using simple software. Nowadays, changing the IMEI is much more difficult, since mobile equipment manufacturers are improving the protection system. Some companies claim that it is simply impossible to change the IMEI on their devices. It should be noted that in some countries changing the IMEI is a criminal act.
There is also a 16-digit IMEISV, which in addition to identifying the device, allows checking the conformity of the installed software with that allowed by the operator.
The IMEI is distributed to mobile phone manufacturing companies by specially authorized international organizations, for example BABT. So that they register on each specific phone, their specific code.
The IMEI appears in several places. The easiest way to find it is to type *#06# on the keyboard (supported by most manufacturers):
Why is IMEI identifier needed?The IMEI number is needed for:
1.- IMEI is used to identify the device on the network.
2.- IMEI is the serial number of the phone.
3.- The IMEI can be used to track the phone and lock carrier-level stolen devices. It is true that in the latter case you cannot use the device only within a carrier.
4.- Using the IMEI, you can find out if the device is stolen .
How does IMEI identifier work?
Those. the operator receives a lot of information by the IMEI number, who, where and when used it, what is the SIM card now, to whom it is issued and location. With this data, you can find the person who used the phone, their approximate location, for example, a lost person who called the rescue service.
Therefore, before buying a used device, always check the IMEI of the smartphone by the number * # 06 # and which is indicated on the package. Also, it will not be superfluous to use special services on the Internet that display information about the status of the device, desired or not. Details on how to find out on different models of smartphones.
IMEI is an individual radio module number that is available on every Android device or other operating system. IMEI is needed to authorize devices on the operator's mobile network. Without it, the user will not be able to make or receive calls or SMS messages. If the device uses twoSIM cards at the same time, two IMEI codes will be displayed at the same time.
How to find the IMEI on Mobile?
IMEI is a device identification number, which is also used for network authorization and even allows you to find and lock the device in case of theft.
It is very easy to see the IMEI of the phone, and it does not matter what brand of your device, whether it is Samsung, Sony, LG, Alcatel, iPhone, etc., since in this case there is no difference. There are no special differences in the firmware, be it Android, iOS or Windows Mobile.
There are several methods to find out the IMEI.
Method 1 find IMEI
1.- Go to the Phone application.
2.- Enter the code *#06# .
3.- Here we have two IMEI:
3.1.- Why two? The phone uses two SIM cards and needs two IMEIs to register each SIM on the network. If you have a single symbol device, there will be an IMEI.
4.- How to find IMEI on iPhone? In the same way: enter the desired combination and see the result.
4.1- Your phone will display the IMEI in front of you.
Method 2 find IMEI1.- Let's find the IMEI through the phone menu. To do this, go to settings.
2.- We find the section "About the phone" or "Phone information" - is usually the last or penultimate in the menu.
3.- The 2 IMEI will appear.
Method 3 find IMEIThis code also applies to the phone itself, you can see it by removing the cover, often under the battery. In addition, there will be other information about your device.
Changing the IMEI is prohibited by law, and if you see that it is different on a smartphone with the information printed on the box or receipt, then sound the alarm. Under no circumstances should you purchase such a device.
Method 4 find IMEI
If you have two SIM cards, there will also be two IMEIs on the label.
That's why you shouldn't throw away the phone case. In the future, you can always use it to prove that the device is definitely yours. And when selling, you will need it, because. ensures that the device has not been stolen. Buying a smartphone without a box is always a big lottery.
By IMEI, the phone may be locked on GSM networks and it just won't work, it may also be in the stolen database. A box or receipt guarantees security in such cases.
In some mobile models, the IMEI is also located in the compartment where the SIM card is inserted.
Method 5 find IMEI
Find IMEI remotelyOn Android remotely.- So you can see this code if your smartphone is lost or stolen. The main thing is that it is linked to a Google account, and it remembers the authorization data.
1.- Go to the address: https://www.google.com/android /find and login. On your smartphone, click the icon with an exclamation point.
On iPhone remotely
1.- Go to the address: https://appleid.apple.com/#!&page=signin and sign in.
2.- Scroll down the page to the block with devices and click on your iPhone. Here the IMEI will be displayed immediately.
Interesting! You can also see it in iTunes, but if you don't have this program installed, there is no point in doing it just for this information.
How to restore IMEI identifier?In rare cases, a system window with the inscription "Invalid IMEI" may appear on the device screen, due to which the smartphone is not authorized in the network of the mobile operator. When this error occurs, the user cannot work with the network, that is, make calls, receive calls and use the mobile Internet.
There may be several reasons for the appearance of information about the loss of the IMEI identifier or the display of an empty window when checking using a USSD request. For example, due to an unsuccessful attempt to flash the device or a hard reset (reset to factory settings). It is worth noting that in case of problems with IMEI, all functions on the device are fully functional, apart from those related to the radio module (network coverage).
If it suddenly happens that the IMEI is not displayed on your device when prompted, there are several ways to restore it.
1.- Repair IMEI with the engineering menu To call the engineering menu (Engineer Mode), you must use a special combination which may differ for different devices. You can find out which combination will help you call the engineering menu in the instructions or documentation that comes with the device.
If for some reason the documentation is lost or not available nearby, try using the code *#3646633#. If it doesn't fit, you can try to choose a code from the options for different manufacturers.
2.- Repair IMEI with IMEI call commands
|Phone model||IMEI call command|
|Smartphones con MTK||*#*#54298#*#* o *#*#3646633#*#*|
|Samsung||*#*#8255#*#* o *#*#4636#*#*|
|Mosca, Alcatel, Philips||*#*#3646633#*#*|
1.- Go to Connectivity - CDS information - Radio information. The last paragraph shows sections, the number of which depends on the number of SIM cards used by the device.
2.- Next, go to the tab "Phone 1" and in front of AT + enter the command EGMR=1.7. If the Android device you are using supports dual SIM cards, two parameters will be available to change at once (IMEI_1[SIM1] and IMEI_2[SIM2]). Now replace IMEI1 or IMEI2 with any 15 digit number and click the SUBMIT button.
How to restore IMEI with IMEI & SN Writer ?IMEI&SN Writer. Since this program is quite simple to use and does not require root rights, every user can use it to restore the IMEI of their device. To restore the IMEI identifier, use Android device drivers, database files for the type of processor used by the device, and IMEI & SN Writer.
Change IMEI number of Notal is illegal, please use this tool to repair IMEI number
Download IMEI & SN Writer for Mobiles
1.- Install the device drivers on the PC. Next, run the utility, select SMARTPHONE in the Platform field, USB below, fill in the IMEI_1 and IMEI_2 fields. Click the Select Database button.
2.- In the window that appears, first select the modem parts database file. It usually starts with the BPLGU characters.
3.- Next, open the processor part file. In most cases, its name starts with APDB.
4.- In the main window, click Start to start the recovery.
5.- After completing these steps, connect your Android device to your computer and wait until the recovery procedure is complete and a message appeared that the IMEI was entered correctly.
6.- Turn on your smartphone or tablet, enter the USSD request *#06# and make sure the IMEI is displayed .
Note.- If the user does not you have the original factory firmware and there is no way to find it, you should try to use the firmware of the device with a similar processor model.
IMEI to find Stolen/Lost mobile?
Many inexperienced users, noticing the loss, first write a statement about the loss and give it to law enforcement. But this is not the most effective way, because the amount of damage is not that big, so few people agree to make special efforts to search.
It is worth noting that the chances of finding a lost or stolen device on your own are very small for two reasons:
1.- No equipment required for IMEI search: to find a lost or stolen device, you need access to special equipment, as well as databases of all mobile operators in the country where the loss or theft occurred. It is thanks to this that you can determine the location of the lost device and the new mobile number used by the device. The problem is that only law enforcement officials have access to equipment and information.
2.- There is no access to information about the location of the device: absolutely all the online services that the user can find on the Internet, as well as applications and programs supposedly to search for smartphones by IMEI, are completely ineffective. Only the mobile operator can provide information about the location of the devices at the request of the police, who received the statement from the owner of the theft. Therefore, do not resort to online services and various applications to find lost or stolen devices.
The only sure way to find your device is to file a theft report with law enforcement to file a stolen claim. The police, in turn, send a request to the mobile operator to search for the device. Quite often, this method leads to finding smartphones and tablets.
In Google "Find my device"?
1.- Go to your browser on your computer and write "Google Find My Device" in the search bar.
2.- Select a site whose address contains the word google, access it.
3.- An account form is opened, in which you enter the name of the email and the password.
4.- Confirm from your phone that you are the owner.
5.- If everything went well, a map opens, on the left side of which you will see the parameters of your phone and a functional menu where you can call, lock or wipe data from the phone. However, when geolocation is disabled on your phone, your phone's location cannot be displayed.
6.- To enable the display on the map, in the menu "Configuration" - "Location", move the lever to the "ON" position.
7.- The location of your phone is displayed on the computer screen.
Tips for finding device?Fill out a business card with contact details on your smartphone or tablet. This will help, in case of loss of the device, the finder to find the owner of the device to contact him.
install the TheftAlert application on the device, which is designed to send an SMS message when changing the SIM card to a pre-specified phone number.
if the device is lost, immediately use one of the services (for example, LoSToleN), which will allow you to add the device's IMEI to the database of stolen devices. In addition, in many similar services, you can specify the amount of the remuneration for the return.
Is it possible to remove IMEI identifier?Since the IMEI is a very important indicator for any device, there is no way to remove it on purpose.
"complete removal" also means the following:
1.- Force not to show IMEI on the screen by dialing * # 06 #, which it is possible with certain knowledge in the field of programming.
2.- Prohibit reading a memory cell or accessing it. But what cannot be read, for example, through the RS-232 channel (computer port), will be read by a USB-Jig device (used in service centers to restore "damaged") or, in extreme cases, by a programmer (a device designed to write and read information in ROM (Read Only Memory).
3.- Forcing not to issue IMEI to the network on request is problematic, but possible. But in this case, there is a high probability that the service will be refused or the phone will never find the network.
Each operator has an IMEI base, a request for an individual radio module number is required when registering on the network, and if the network operator does not receive a 16-digit number when requesting it, it will not allow the phone to use the network . From all of the above, we can conclude that "complete IMEI removal" is impossible.
Due to the fact that the IMEI is really important in all Android devices, it is recommended to check it in all devices, rewrite it and save it in a safe place. If you encounter any difficulty, you can use repair or replace IMEI methods.
How to change the IMEI of the Mobile?The identification code of the phone We will tell you if it is possible to change the IMEI, why to do it and how.
The IMEI code is the International Mobile Device Identity, which consists of 15 digits. The manufacturer assigns it to the phone and enters it in the database; the code is unique for each device.
Mobile operators use this code to identify a device on the GSM network and provide it with communication services. Using the IMEI, they can track the location of the phone to find it or lock it if necessary.
And if certified devices do not have IMEI issues, then "grey" (not registered in the database) phones without this code can be produced, or the code will duplicate the IMEI numbers of another phone.
Since it is impossible to use communication services without a unique identifier, many owners of such devices want to know whether and how to change it.
How to change the IMEI?
You can update the IMEI code yourself, there are several ways to do it. The phones have a built-in ability to change the identifier through the engineering menu. In addition, there are third-party programs that allow you to change the phone code.
IMEI through the engineering menu?.-This method is a bit more complicated, since devices of different brands use different combinations to enter the engineering menu. Consider the most common:
Samsung: *#*#4636#*#* o *#*#8255#*#*.
HTC: *#*#3424#*#* o *#*#8255#*#*.
Huawei: *#*#2846589#*#*, *#*#3646633#*#*.
Meizu, ZTE: *983*07#.
After successfully entering the engineering menu, the user should:
1.- Open the "Connectivity" section.
2.- Go to information CDS.
3.- Select the "Radio information" tab.
4.- Click on the line "Phone 1".
A new window opens with an input field at the top. There you need to enter the following command: AT + EGMR \u003d 1.7, "new IMEI". Then confirm the operation by clicking the button below: "Send to command".
the phone must be rebooted.
IMEI through third party APPs?.-
Special applications for changing the IMEI work easier, since some of them automatically generate the necessary code. However, root rights must be enabled for it to work on the phone.
After activating superuser rights, simply download the desired APK file (since these programs are usually not found on Google Play) and follow the instructions.
Applications to change the IMEI on your phone:
It is installed as a module if you download the Xposed Framework on your phone (you need to download it from third-party sources). After installation, you need to select the "Modules" section and check the box next to IMEI Changer. After that, you will need to restart your phone and then open the Xposed IMEI Changer program.
Two fields are available in it: the current IMEI and the new one. In the second field, you need to enter the numbers of the new code, and then click the "Apply" button.
The APK file for this program must also be downloaded from a third-party source. It allows you to change the IMEI of two SIM cards, and there is also a button that allows you to automatically generate codes. After entering, it remains to click on the action "Apply new IMEI".
After changing the IMEI through any of the listed programs, the phone must be restarted.
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IMEI identifier and how it works? .-