What is UDID? How to check the UDID of an iPhone?

UDID is a device identifier, which can be said to be the ID number of the Apple mobile phone. is unique.

3. Follow the diagram below to view the ULID >

The full name of UDID is Unique Device Identifier, which is the unique identification code of Apple iOS devices, which consists of 40 digits of hexadecimal letters and ruler volt numbers (jailbroken devices can change the UDI of the device through some tools).

Mobile networks can use UDID to identify mobile devices, however, starting from August), Apple announced that it will no longer support the UniqueIdentifier method to obtain the UDO of the device, which can be used below iOS 5.

Apple has removed access to UDIC via ** since iOS 5. As of May 1, 2013, programs attempting to access UIDIDS will no longer be approved, and instead developers should use the "vendor or advertising identifiers introduced in iOS 6". So UDID is absolutely unusable.

Features:

Everyone can create a UUID that doesn't conflict with anyone else. In this case, there is no need to consider duplicate names when the database is created. Apple recommends using a UUID to generate a unique identification string for your app.

The system does not store the obtained UUID value, and each time a UUID is called, the system returns a new unique identifier. If you want to store this identifier, you need to store it in nsuserdefaults, keychain, pasteboard, or somewhere else. At present, most applications store UUID, which is a method provided by Apple after iOS 6 to obtain large random numbers.

Method 1: Query through iTunes;

Double-click the iTunes software icon on your computer and open the iTunes software;

After opening the iTunes software, connect the iPhone again, and the UDID number of the phone can be displayed on the computer.

Method 2: Query through iTools; After connecting your Apple hand to the computer, open the iTools tool in the computer, and then click "Details" to see the UDID number.

UDID refers to the unique device identifier of a device, which is often used by mobile advertisers and gaming network operators to identify player users and track user activity.

There are three ways to query UDICs.

1. Use iTunes to view UDIDs

2. Xcode to view the UDI

3. Third-party UDO viewing tool.

UDID is a special identification code for iOS devices. In addition to the serial number, each iOS device has a unique set of numbers, which we call a unique device identifier (UDID). Each iOS developer will receive 100 beta test seats for the $99 annual fee, which allows the software developer to enter the UDICs of 100 iOS devices.

If you want to become a beta tester, you only need to submit a UD to the developer, enter it and create a description file, and the phone will be able to use all the software made by the same developer.

It's not hard to check your phone's UDIC, just connect your phone to iTunes, and the serial number and other information will appear on the page of your selected mobile device.