What to text message with a mobile phone signature 40

Don't believe them. Oh, look it up online.

If you use a vivo mobile phone, it refers to the SMS personalized signature and closed name:

The words "vivo smartphone" are displayed by default in the SMS box, and you can click on the signature content to customize your personalized signature.

SMS signature is a calling service provided by network operators (China Unicom, China Mobile, and China Telecom).

The SMS signature service is a calling service, which is a fast and convenient way for carriers to provide customers with personalized signatures. When sending an SMS, the SMS system will attach a personalized signature to the content of the SMS according to the customer's settings, and then send it to the called mobile customer.

The SMS signature service is only applicable to point-to-point SMS messages in the network (excluding V-network SMS) and messages sent to terminals on different networks (China Unicom and PHS users).

When a customer sends an SMS, the SMS system will attach a personalized signature to the SMS content according to the customer's settings, and then send it to the called mobile customer.

That is, there is a fixed value in each text message (both words and numbers are acceptable).

Whatever the content is, the content of the settings will be sent out in the text message.

The SMS signature service is a calling service, which is a fast and convenient personalized signature method for operators to meet customers. When a customer sends a text message, the SMS system will attach a personalized signature to the content of the SMS according to the customer's settings, and then send it to the mobile phone customer who is called by Brother Zi.

Sign: The use of a special tool to write the content of the certificate to a specific field of the application, indicating that the software has passed the signer's review. The signatory is responsible for the security of the software.

Among them, there are three kinds of signatures: 1Symbian Fee Certificate Signature.

2.Authors sign with a public free certificate. 3.

User signature (using a development certificate). Signatures are mainly to prevent malware. In order for an application to implement these "specifically restricted" functions, it must be "signed".

In other words, someone has to be responsible for the safety of this operation! Programs that are not signed cannot be installed and run

"Mobile phone signature" is a value-added service that provides additional information during a user's call. In the process of the user's call, the system automatically pushes the mobile phone signature information (mood, joke, business offer, etc.) pre-set by the called party to the caller's mobile phone in the form of text, so that the other user can see the mobile phone signature information during the call, so as to achieve the purpose of highlighting personality, sharing mood, and transmitting business information.

1.Symbian Fee Certificate Signature. That is, it is signed with the charging certificate officially issued by the Symbian mobile phone operating system.

Software that has passed the Symbian security certification will receive a Symbian certificate, which is available for a fee and may have to be recertified with each update. This type of software has a high level of security. It can be installed and run normally on the mobile phone and can realize all the functions provided by the software.

2.Authors sign with a public free certificate. The author of the software signs the software with a public free certificate when it is released.

This type of software can be installed and run on mobile phones (security warnings may be encountered and can be skipped). However, because the public free certificate has low authority, it cannot implement those "specially restricted" functions. If a piece of software doesn't involve this kind of functionality at all, then it's entirely possible that the software author can sign it himself.

It is also possible that some of the software's features are "specifically restricted" but not the main functionality. The author of the software may also release an "author-signed version" that works with most of the features but loses some certain features. For example, there is such a version of the "Callitcom" software, almost all functions can be used, but it cannot be turned on and started automatically.

3.User signature (using a development certificate). Strictly speaking, this should be a "developer signature".

Because Symbian provides software developers with a "development certificate", it was originally intended for software developers to use for software testing. This "development certificate" is linked to the IMEI code of the machine being used for testing. Software signed with this certificate can only be used on the machine corresponding to the IMEI code, and cannot be used on other machines.

What we call "self-signing" is actually using this method, to put it bluntly, you say that you are developing software, you provide the IMEI code of your test machine, and Symbian issues you a "development certificate", and you sign your "test software" with this certificate. You yourself are responsible for your own "development behavior"! So much for.

In addition, the development certificate is valid for three years from the date of issue. However, there is no limit to the time limit for the use of the signed program (after the certificate expires, it can be installed by modifying the date of the mobile phone system, and it can be modified back after installation).