Why can't I send emails on my mobile phone? He always prompts "network server error" and asks for expert advice. How to set up a mobile phone?

What kind of mobile phone are you? If you are a Nokia, set up your phone as follows: Now enter Gmail and enable IMAP (usually enabled by default). Gmail- Settings-Forwarding and POP/IMAP-IMAP Access: Enable IMAP- Save Changes. Then it is set by the mobile phone. Menu-Info-Options-Settings-Email-Mailbox-New Mailbox appears: Use the Mailbox Setup Wizard to define the mailbox to be used in the mobile phone. Press any key to hide the popup text. It starts at 8: 00. Then click the order to make a selection. E-mail type: IMAP4 My e-mail address: smtp.gmail.com mail receiving server: smtp.gmail.com mail sending server: Access point used by smtp.gmail.com: Choose one here? Give it a try one by one ~ (I chose "Mobile MMS" and "Monternet", but neither works. I chose "GPRS connected to the Internet" to make it work. ) Email Name: Pick any name. Then enter the newly created mailbox and change the parameters. The specific parameters are as follows. I. Connection settings: Connection settings are divided into receiving mail settings and sending mail settings. Receiving mail: User name: Gmail account name, excluding @ and the following. (Example: Write xxxxx when you are in xxxxx@gmail.com) Password: Email password Email receiving server: imap.gmail.com (It has just been set up, so it doesn't need to be changed. ) Access point used: (This has just been set and does not need to be changed. E-mail name: (This is just set, so it doesn't need to be changed. Mail type: IMAP4 (this has just been set up, no need to change it. ) Security (port): SSL/TLS port: 993 by default or customized. Send mail: My email address:: xxxxx@gmail.com( has just been set, so there is no need to change it. ) User name: Gmail account name, excluding @ and the following. (For example, write xxxxx when you are in xxxxx@gmail.com) Password: Email password. Email server: smtp.gmail.com (This is just set, so there is no need to change it. ) Access point used: (This has just been set and does not need to be changed. ) security (port): StartTLS port: set to 25 by default or manually. Second, user settings: my name: pick any one. The name of the sender displayed when sending an email, that is, the name you want the other party to see. Send a message: Send it to yourself immediately. Send copy: No including signature: Yes or No. If you choose "Yes", then enter your email signature. Prompt for new mail: open 3. Select and set the messages that can be extracted: only extract the number of titles: all (set by yourself. ) IMAP4 folder path: Unix path (this is the default. Subscription folder: The default subscription folder is Inbox. You can add custom tags to gmail or folders attached to gmail, such as: all mail, drafts, sent mail, spam, starred mail, deleted mail, etc. 4. Automatic extraction: mail notification: mail extraction is not started: start extraction date: extraction time is 07:00-24:00 every day, set. Extraction interval: every 5 minutes, so that the mailbox will be automatically connected every 5 minutes, and it is actually online at any time. The flow rate shall not exceed 10k for each automatic extraction.