What is MEID 1 Hex?
MEID stands for Mobile Equipment Identifier. It is a globally unique identifier assigned to mobile devices, particularly those that operate on CDMA (Code Division Multiple Access) networks. The MEID helps identify a specific mobile device on the network and is used in various processes like device provisioning, authentication, and tracking.
When we refer to MEID 1 Hex, we are talking about the hexadecimal representation of the MEID value. This form is one of the standard formats used to represent the MEID, with “Hex” meaning it uses base-16 numbering, including digits from 0 to 9 and letters from A to F.
Structure of MEID
The MEID is a 56-bit identifier. It typically follows a standard format that includes the following parts:
- Manufacturer Code: 8 hexadecimal digits identifying the device manufacturer.
- Serial Number: 6 hexadecimal digits assigned by the manufacturer uniquely to each device.
The complete MEID in hexadecimal (Hex) format is made up of 14 characters. An example might be something like A00000027F5C39.
Why MEID Replaced ESN
Before the introduction of MEID, mobile devices on CDMA networks used ESN (Electronic Serial Number) as their unique identifier. However, because ESNs are only 32 bits long, the pool of available ESNs became exhausted. MEID was introduced to overcome this limitation by providing a larger address space with 56 bits, supporting more devices.
MEID Formats
There are typically two main formats in which MEID is represented:
| Format | Description |
|---|---|
| Hex (Hexadecimal) | Uses base-16 numbers; commonly shown in 14-character form, e.g., A00000027F5C39. |
| DEC (Decimal) | MEID converted into a 18-digit decimal number. |
Where is MEID Used?
The MEID is used for various purposes related to device management, security, and network operation. Some common uses include:
- Activation and Provisioning: Carriers use the MEID to activate and register devices on their network.
- Device Authentication: Networks use the MEID to identify and authenticate devices trying to connect.
- Tracking and Monitoring: Law enforcement or carriers may use the MEID to locate lost or stolen phones.
- Network Blacklisting: Devices reported stolen can have their MEID added to a blacklist, preventing them from accessing the network.
How to Find MEID 1 Hex on a Device
Users can find their MEID in several ways depending on the device and operating system. The hexadecimal format is usually what is displayed by default:
- Dial
*#06#on the phone dialer – works on many devices. - Navigate to Settings > About Phone > Status.
- Check the sticker on the back of the phone or under the battery (for older models).
- Look at the original packaging of the device.
MEID vs IMEI
Many users confuse MEID with IMEI (International Mobile Equipment Identity). Although they both serve similar purposes, they are used in different network technologies.
| Attribute | MEID | IMEI |
|---|---|---|
| Used In | CDMA Networks | GSM, LTE, and 5G Networks |
| Length | 56 bits (14 hex digits) | 15 decimal digits |
| Check Digit | Does not include a check digit | Includes a Luhn check digit |
Can a device have both MEID and IMEI?
Yes, some dual-mode phones (supporting both GSM and CDMA) can have both an IMEI and a MEID. Typically, these values are assigned to different SIM slots or communication modules within the same device.
What is MEID 1 vs MEID 2?
Some devices, particularly dual-SIM phones, may show two MEIDs: MEID 1 and MEID 2. These refer to the unique identifiers for each SIM slot. MEID 1 corresponds to the first SIM module, and MEID 2 to the second. Both will be different, ensuring unique identification of each cellular module within the device.
What happens if MEID is missing or invalid?
If a device has a missing or tampered MEID, it may not be able to register on a carrier network. Carriers rely on MEID to authenticate and provision the device. Devices without a valid MEID might be flagged or restricted from access, especially if reported stolen or cloned.