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Introduction systems require a (mostly) unique identifier for mobile devices. This identifier is specific to the device, and can't (easily) be changed, unlike a phone number (also known as a 'MIN').
There are two major identifier types - the older Electronic Serial Number (ESN) and the newer Mobile Equipment Identifier (MEID). Both identifiers have multiple presentation formats, and it can be tricky to determine how to actually identify a device if you're given a number in an unknown format.
This document aims to demystify ESNs and MEIDs. Electronic Serial Number (ESN) ESN's are managed by the.
They are 32 bits long (that is, they can be described by a sequence of 32 1's and 0's), and identify the manufacturer of a mobile device and also the serial number assigned to the device by that manufacturer. The basic format for ESN's consists of 8 bits to specify the manufacturer and 24 bits to specify the serial number: The 8 bits of the manufacturer portion lead to 256 (2^8) different possible manufacturer codes. Some codes are reserved, however: numbers 0 through 18, 128, 250, and 255 are not to be used as normal ESNs.
For manufacturer codes 0 through 17, 250, and 255, the manufacturer code is 14 bits and the serial number is 18 bits. Code 128 is discussed below in the pESN section.
Apple Serial Number To Imei Converter
It's usually most convenient to assume the standard format, and treat the reserved codes as exceptions. The 32 binary bits can be expressed in several ways, but the two recognized ways are:.
8 character hex code: A 2 character code to represent the manufacturer, and a 6 character hex code to represent the serial number. This is the most widely used format.
Examples: 0x0106C01B8 (using 0x to indicate that a hex value follows), 0hC3B80 (using 0h to indicate that a hex value follows), e5ab0134b (without a prefix). 11 digit decimal code: A 3 digit decimal number to represent the manufacturer, and an 8 digit decimal number to represent the serial number.
Examples: 9, 0. This is the second most widely used format.
Beware: some programs (e.g. Microsoft Excel) strip off leading 0's, making it difficult to tell whether you're looking at a decimal ESN. For example, a code of 2 might show up as. You might have as few as 8 digits (a manufacturer code of 000), or 9 digits (reserved manufacturer codes 001 through 009).
Iphone Serial Number To Imei Converter
Type Manufacturer Code Serial Number Binary 8 binary bits 24 binary bits Hexadecimal 2 hexadecimal numbers 6 hexadecimal numbers Decimal 3 decimal digits 8 decimal digits To convert between the two, break up your code (in either format) into a manufacturer block and a serial number block, convert the block to/from decimal/hex separately, then concatenate the two blocks. Make sure the blocks start and end with the correct number of hex characters/decimal digits. Hex format to decimal format example: 0x0106C01B8 breaks into 0x10 and 0x6C01B8. 0x10 in decimal is 16, and 0x6C01B8 is 7078328. The converted ESN is 167078328. Decimal format to hex format example: 067078328 breaks into 067 and 078328.
067 in hex is 0x43, and 078328 is 0x131F8. The converted ESN is 0x43131F8. Some improper, but not-uncommon ways of representing ESNs are:. Converting the 11 digit decimal code above straight to hexadecimal (i.e. Not splitting it into 3 digits for the manufacturer and 8 for the serial number). This can be difficult to detect, as they are also 8 hex digits.
If you have a set of 8 character hex codes, check the manufacturer codes. If you consistently see an uncommon (for you) manufacturer, someone may have given you the ESN in this improper format. To correct this, convert the hex number back to decimal, then split up the manufacturer (3 digits) and serial number (8 digits). Converting the 8 character hex code above straight to decimal (i.e.
Not splitting it into 2 characters for the manufacturer and 6 for the serial number). This is a little bit easier to detect than the previous improper format, as these will be a maximum of 10 decimal digits (2^32 - 1 =4,294,967,295). To correct this, convert the decimal number back to hex, then split up the manufacturer (2 characters) and the serial number (6 characters). Resources for ESNs:. beware, this table is improperly labeled in multiple places.
Should be properly labeled. Mobile Equipment Identifier (MEID) MEID's are also manged by the.
These are 56 bits long, and like ESN's, identify the manufacturer of a mobile device as well as the serial number assigned to the device by that manufacturer. The MEID consists of 32 bits to specify the manufacturer and 24 bits to specify the serial number: The first 4 bits of the manufacturer code are 'reserved,' and restricted to just a few values. There can also be a 4 bit 'check digit' appended to the end, but this is not transmitted between the mobile device and the CDMA system (according to ) and is not common to see. There are two proper ways to represent MEIDs:. 14 character hex code: An 8 character hex code to represent the manufacturer (2 for the reserved portion, 6 for the actual manufacturer portion), and a 6 character hex code to represent the serial number. This is the most widely used format.
Examples: 0xA6F2 (using 0x to indicate that a hex value follows), 0hA00000003FF642 (using 0h to indicate that a hex value follows), ff000000b2c63a (without a prefix). 18 digit decimal code: A 10 digit decimal number to represent the manufacturer, and an 8 digit decimal number to represent the serial number. Example: 10201020. Type Manufacturer Code Serial Number Binary 32 binary bits 24 binary bits Hexadecimal 8 hexadecimal numbers 6 hexadecimal numbers Decimal 10 decimal digits 8 decimal digits To convert between the two, break up your code (in either format) into a manufacturer block and a serial number block, convert the block to/from decimal/hex separately, then concatenate the two blocks. Make sure the blocks start and end with the correct number of hex characters/decimal digits. Hex format to decimal format example: 0xA6F2 breaks into 0xA1000000 and 0x9296F2.
0xA1000000 in decimal is, and 0x9296F2 is 9606898. The converted manufacturer block is OK (10 decimal digits), but the serial number block is one short (it's 7 instead of 8), so we prepend a 0 to it. The converted MEID is 09606898 (18 decimal digits).
Decimal format to hex format example: 10201020 breaks into and 10201020. In hex is 0xA0000000, and 10201020 is 0x9BA7BC. The converted MEID is 0xA00000009BA7BC. Some improper, but not-uncommon ways of representing MEIDs are:. Converting the 18 digit decimal code above straight to hexadecimal (i.e. Not splitting it into 10 digits for the manufacturer and 8 for the serial number). To correct this, convert the hex number back to decimal, then split up the manufacturer (10 digits) and serial number (8 digits).
Serial Number To Imei Converter - Free
Converting the 14 character hex code above straight to decimal (i.e. Not splitting it into 8 characters for the manufacturer and 6 for the serial number). To correct this, convert the decimal number back to hex, then split up the manufacturer (8 characters) and the serial number (6 characters). Tip: For MEIDs, it can be difficult to convert to/from hex/decimal an improper code, since the numbers are so large (they cause an error if the 'integer' type used in whatever conversion routine is not big enough). If you're using Excel:.
Resources for MEID's:. Pseudo ESN (pESN) The reserved ESN manufacturer code 128 is for 'pseudo ESN's,' which allow legacy equipment to recognize MEIDs. PESN's are ESN codes that always begin with 0x80 in the hex format (or 128 in the decimal format, but it is much more convenient to work with the hex format for pESNs). To generate one, you apply the to the MEID, and take the last (least significant) 24 bits (6 hex numbers) of the result, and append them to 0x80. Sonic and knuckles free download for android. This can be tricky to do, especially if you're using something like Microsoft Excel. You want to apply SHA-1 to the number representing the MEID, not the string representing the MEID. You'll need to process it byte-by-byte, so you must give it two hex numbers at a time (since two hex numbers make a byte) and make sure they are interpreted as numbers and not ASCII characters.
This VBA script, which can be used as a user-defined Excel function, does the trick: Examples:. Given MEID 0xA329, make a pESN.
SHA-1 on A329 gives e3be267a2cd5c861f3c7ea4224df829a3551f1ab. Take the last 6 hex numbers of this result, and append it to 0x80 - the result is 0x8051F1AB. Given MEID 0xFF56, make a pESN. SHA-1 on ' FF56' gives ffce4beab4c2a7933c0d6d21b21cf21a0e0737e1. Take the last 6 hex numbers of this result, and append it to 0x80 - the result is 0x800737E1.
Before you begin
- You can find these numbers in several places, including Settings, on the physical device, in Finder or iTunes, and on the original packaging.
- When you contact Apple for support, you can use the serial number or the IMEI/MEID number to identify your device.
Find your serial number, IMEI/MEID, or ICCID
- Go to Settings > General and tap About.
- Look for the serial number. You might need to scroll down to find the IMEI/MEID, and ICCID.
- To paste this information into Apple registration or support forms, touch and hold the number to copy.
Still haven't found the number that you need? See the following sections.
iPhone
On these devices, find the serial number in Settings and the IMEI/MEID on the SIM tray. If you need support but you can't view the Settings menu, you can use the IMEI/MEID instead of the serial number:
- iPhone 12
- iPhone 12 mini
- iPhone 12 Pro
- iPhone 12 Pro Max
- iPhone SE (2nd generation)
- iPhone 11
- iPhone 11 Pro
- iPhone 11 Pro Max
- iPhone XS
- iPhone XS Max
- iPhone XR
- iPhone X
- iPhone 8
- iPhone 8 Plus
- iPhone 7
- iPhone 7 Plus
- iPhone 6s
- iPhone 6s Plus
On these devices, find the serial number in Settings and the IMEI/MEID (the MEID is the first 14 digits of the IMEI) on the back. If you need support but you can't view the Settings menu, you can use the IMEI/MEID instead of the serial number:
- iPhone 6
- iPhone 6 Plus
- iPhone SE (1st generation)
- iPhone 5s
- iPhone 5c
- iPhone 5
On these devices, find the serial number and IMEI/MEID on the SIM tray:
Serial Number To Imei Converter
- iPhone 3G
- iPhone 3GS
- iPhone 4 (GSM model)
- iPhone 4s
If you have an original iPhone, find the serial number and IMEI engraved on the back. Imei unlock code generator lg free.
iPad and iPod touch
Find the serial number for your iPad Pro, iPad, or iPod touch on the back of the device. On an iPad (Wi-Fi + cellular model), you'll also find the IMEI.
Finder and iTunes
You can also find the serial number for your device in Finder or iTunes:
- Connect your device to your computer.
- On a Mac with macOS Catalina 10.15 or later, open the Finder. On a Mac with macOS Mojave or earlier, or on a PC, open iTunes.
- Locate your device. In Finder, make sure you're under the General tab. In iTunes click the Summary tab to see its information.
- For an iPhone, click Phone Number under your device name or the device model to find the IMEI/MEID and ICCID. For an iPad (cellular model), click Serial Number to find the CDN, IMEI/MEID, and ICCID.
If you'd like to paste this information into Apple registration or support forms,choose Edit > Copy Serial Number.
If you don't have your device
There are several places to check that might show the serial or IMEI/MEID number.
- Go to appleid.apple.com in a web browser on your computer.
- Sign in with the Apple ID that you use on your device.
- Scroll down to the Devices section. To see the serial and IMEI/MEID number, select the device.
If you still need help, here's what to try next:
- Do you have a different device with iOS 10.3 or later that's signed in to your Apple ID? On that device, go to Settings > [Your name]. Scroll down to see any devices signed in with your Apple ID. To view the serial and IMEI/MEID number, tap the device name.
- Do you still have your device's original package? Find the serial number and IMEI/MEID on the barcode:
- Still can't find the number that you need? Contact Apple Support by selecting your device from this list: