Which system programs can be deleted? AccountsyncManager.apk (social network account management program) is a program for managing Facebook and Flickr accounts. Deleted, no exception found. Browser.apk (browser) Calculator.apk (calculator) Calendar.apk (calendar) CalendarProvider.apk (calendar storage) checkin.apk (check-in) CheckinProvider.apk (check-in service) com.htc.MusicWidget.apk (music widget) com.htc.WeatherWidget.apk (weather widget) Gmail.apk (GMail) #Free webmail service provided by Google GmailProvider.apk (Gmail storage) gtalkservice.apk (GTalk service) Googlesubscribedfeedsprovider (synchronized feed, don't know what it does, delete it) HTC_CIME.apk (Touch Input Chinese) can be removed, but after removal, you must skip the keyboard test when entering the system pop-up setup wizard for the first time, otherwise it will crash. HTC_IME.apk (Touch Input) Same as above HTCAlbum.apk (Album) htccalendarwidgets.apk (Calendar widget) HTCCamera.apk (Camera) HtcClockWidget.apk (Clock widget) HtcContacts.apk (Contacts) htccalendarwidgets.apk (Contacts widget) htcmailwidgets.apk (mail widget) htcmsgwidgets.apk (information widget) HtcMusic.apk (music) HtcPhotoWidget.apk (photo widget) htcsearchwidgets.apk (search widget) htcsettingwidgets.apk (settings widget) are those quick switches that can turn off WLAN and Bluetooth. HtcSoundRecorder.apk (recorder) HtcStreamPlayer.apk (streaming media player) comes with a player that can only play 3GP and MP4. Htcsyncwidget.Apk (looks like a synchronization program, I deleted it) HTMLViewer.apk (HTML viewer) IM.apk (instant messaging) is MSN and Yahoo Messenger. ImProvider.apk (GTalk service) MarketEnabler_v3.0.2-beta.apk (a tool that provides paid software downloads) can be deleted and then downloaded by yourself. Mail.apk (Mail) is a program for Microsoft Exchange and third-party mail. You can delete it if it is not needed. The version integrated by the original ROM author of Maps.apk (Google Maps) is generally older. If you want to download the latest version yourself, you can delete it. MediaUploader.apk (media upload) Mms.apk (message) is the system's own program that can send text messages. If you use third-party software, you can delete it. NetworkLocation.apk (network location) Newsreader (news, don't know where to connect to, delete it directly) PCSCII.apk (PC synchronization) can be removed if it does not need to be synchronized with the PC. PDFViewer.apk (PDF viewer) SpareParts.apk (advanced system settings) The general version integrated by the original ROM author is older, you can delete it and download it yourself Talk.apk (Google Talk) is GTalk. gtalkservice.apk and ImProvider.apk are its service programs and cannot be downloaded from the electronic market after deletion. UploadProvider.apk (HTC media uploader) UserDictionaryProvider.apk (User Dictionary) It seems that you can delete it if you don't use a dictionary. Vending.apk (Electronic Market) Weather.apk (Weather) After testing, any weather widget will not be able to update the weather after being removed. If the weather function is not needed, it can be removed together with the widget. WeatherProvider.apk (weather program) is the same as wireless_tether_1_60-pre3_htc.apk (a tool that allows the mobile phone to be used as a wireless AP). You can delete it and download the latest one yourself. YouTube.apk (no explanation) If you don't know how to use VPN or don't plan to use VPN, just remove it. It's useless to keep it. QUOTE: After installing Handcent, how do I stop the built-in messaging function? When I receive a text message, there are two text message prompts? Enter the SMS program that comes with the system. After entering, press menu, settings, find "Notifications" after entering, cancel, and that's it. QUOTE: Contact problem. The default ringtone has become an unknown ringtone. How to solve it? The steps are as follows: 1. Import the contacts from the original mobile phone into Outlook 2. Export a *.csv file 3. Import the *.csv file into Gmail 4. Delete all the contacts in the mobile phone. 5. After confirming the deletion, go to menu→Settings→Data synchronization→Google→Contacts 6. Wait for the contacts to be synchronized.7. Please check again to see if the ringtone types of all contacts have become the default? 8. Congratulations on your success! In fact, to put it simply, use Gmail to synchronize contacts. That's it. Just refer to the detailed process of synchronizing Gmail. QUOTE: How to set up 139 mailbox? Specific steps: 1. Open the built-in "Mail" 2. If you have never created a mailbox, select "Other POP3/IMAP" 3. Enter your 139 mailbox account and password in the pop-up input box, and click "Next" 4. In the pop-up option box, change the POP server to pop.139.com, leave the others unchanged, and click "Next" 5. In the pop-up option box, change the SMTP server to smtp.139.com, click "Next" 6. Then click "End Settings" directly and the mailbox will be created. PS: If you find that the email cannot be displayed after refreshing after binding the mailbox, here is the solution 1. Enter the mailbox 2. Press menu-More-Settings-Send and Receive 3. After entering, change the "Email Size Settings" to "Entire Email" and change "By Days" in "Download Options" to "By Quantity". Of course, the number depends on your own choice 4. Return to the mailbox and refresh the mailbox 5. Complete PS: The premise is that your mailbox has enabled POP3/IMAP support QUOTE: The solution to the problem that the electronic market cannot download software. Log in to Gtalk once, and then try to download it in the electronic market. It may be because the Google account automatically went offline. After opening talk, the Google account logged in again, so the download started. QUOTE: Why can't G3 always find pictures or videos? Solution 1. Enter the menu, set the application, manage the application, find the album, click in, clear the data, restart the phone, and then refresh the album. Solution 2. Restore factory settings QUOTE: Why does the alarm clock never go off even though it is set? 1. If you have installed the task manager, do not kill the alarm clock process. In the task manager, add all your commonly used system programs to the ignore list, and there will be no problems. 2. If you have installed autostarts for self-starting program management, do not disable the alarm clock program, otherwise the same problem will occur. 3. Go to the alarm settings, turn on the alarm ring, press the volume key on the left, and see if the alarm sound is turned off.