What identifiers does a smartphone have?

  1. IMEI (International Mobile Equipment Identity): This is a unique numerical code composed of 15-17 digits that identifies a mobile device. IMEI is used to communicate with network providers and can be employed to block or track stolen devices.
  2. IMSI (International Mobile Subscriber Identity): This is a unique subscriber identifier assigned to a SIM card. IMSI is used for authenticating the subscriber on mobile networks.
  3. MAC Address (Media Access Control): This is a unique address assigned to a network adapter of the device. It is used for identifying the device in local networks and Wi-Fi connections.
  4. Android ID: A unique identifier assigned to an Android device. It’s used by app developers to recognize the device on which their app is operating.
  5. Advertising ID: This identifier is used to track user activity and show personalized advertisements. Users can reset or reinitialize this identifier to enhance privacy.
  6. Serial Number: A unique number assigned by the manufacturer to the device. It can be used for identifying the device for servicing or warranty purposes.
  7. UDID (Unique Device Identifier): This is an identifier for Apple devices. However, starting from 2020, Apple no longer supports the use of UDID due to privacy concerns.
  8. IP (Internet Protocol): Is a system that assigns unique addresses to devices, allowing them to communicate and connect on the internet.

Of course, these are only a small part of the IDs that smartphones have, but they are the most interesting.


  1. IMEI (International Mobile Equipment Identity):     This is a unique numerical code composed of 15-17 digits that identifies a mobile device. IMEI is used to communicate with network providers and can be employed to block or track stolen devices.
  2. IMSI (International Mobile Subscriber Identity): This is a unique subscriber identifier assigned to a SIM card. IMSI is used for authenticating the subscriber on mobile networks.
  3. MAC Address (Media Access Control): This is a unique address assigned to a network adapter of the device. It is used for identifying the device in local networks and Wi-Fi connections.
  4. Android ID: A unique identifier assigned to an Android device. It’s used by app developers to recognize the device on which their app is operating.
  5. Advertising ID: This identifier is used to track user activity and show personalized advertisements. Users can reset or reinitialize this identifier to enhance privacy.
  6. Serial Number: A unique number assigned by the manufacturer to the device. It can be used for identifying the device for servicing or warranty purposes.
  7. UDID (Unique Device Identifier): This is an identifier for Apple devices. However, starting from 2020, Apple no longer supports the use of UDID due to privacy concerns.
  8. IP (Internet Protocol): Is a system that assigns unique addresses to devices, allowing them to communicate and connect on the internet.

Of course, these are only a small part of the IDs that smartphones have, but they are the most interesting.

Serial Number

You can find various information about SN using these tools, if you know the brand of device, just do a Google search for it, smartphone companies often have their own website to check SN info, some of them are listed below.

IMEI

Information that you can find using those tools:

Android ID

Information that you can find using those tools:

UDID

Information that you can find using those tools:

IMSI

Information that you can find using those tools:

Advertising ID

These are the hard ones, you have to be a professional to find information about AD ID using these platforms.

IP Adress

Information that you can find using those tools:

Remember that different devices can use one IPv4 at the same time, and some tools can misinform you.

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