Using the iPhone's file app for file management is very simple and suitable for daily tasks. 1. Organize files and folders: Folders can be created through the "New Folder" function, and supports renaming, moving or copying files. They can also be sorted by name, date, etc. 2. Access iCloud and other cloud services: You can connect to iCloudDrive, GoogleDrive, Dropbox, etc., manage the displayed services through "Browse>Location>Edit", and directly save files to cloud storage. 3. Open and share files from other applications: Select the application to open the file through the share icon at the bottom, or share files through email, message or AirDrop. In short, although its functions are limited, its basic

If you forget your iPhone password, you can try the following methods: 1. Use iTunes/Finder to enter recovery mode to restore the device (must be connected to the computer); 2. If you enable "Find My iPhone", you can erase the device through iCloud; 3. Contact Apple customer service for assistance (need to provide a purchase certificate). The first two of the above methods will clear the data. It is recommended to backup regularly in the future and enable the search function.

1. First download the iOS version of the APP through Binance official website; 2. Click to install and wait for the application icon to appear on the desktop; 3. If the prompt is prompted for "untrusted enterprise-level developer" when opening for the first time, you need to enter "Settings-General-V PN and Device Management"; 4. Find the Binance developer name in the "Enterprise APP" and click "Trust"; 5. After completing the trust, you can return to the desktop to start the APP normally; if the certificate expires, you need to download and install again and repeat the trust steps. Be sure to always obtain the application through official channels to ensure the security of the asset. After the entire process is completed, you can successfully use the Binance APP to register or log in.

Purchase USDT and other stablecoins on Apple phones, you must download the compliant exchange app through the overseas Apple ID and complete the authentication and conduct transactions. The specific steps are as follows: 1. Use Apple ID in the non-mainland region to log in to the App Store; 2. Download recommended platforms such as OKX, Binance, Huobi (HTX), Gate.io or KuCoin; 3. Complete registration and identity authentication (KYC); 4. Enter the "Buy Coin" or "C2C/P2P Transaction" page to select USDT; 5. Filter merchants according to the payment method and place orders; 6. Pay through Alipay, WeChat or bank card and confirm transactions; 7. Wait for the merchant to put the coins into the account, and the entire process is completed.

When iPhone Wi-Fi calls cannot be used, first confirm whether the function is enabled: go to Settings > Phone > Wi-Fi calls to make sure the switch is on and the display number is registered; secondly, check whether the Wi-Fi network is stable, give priority to using the 2.4GHz frequency band and avoid public hotspots; then try restarting the device and resetting the network settings (the Wi-Fi password will be cleared); then confirm whether the operator supports this function and has been activated for you; finally check whether the SIM card is plugged in or is damaged, and contact the operator or Apple support to further troubleshoot problems if necessary.

There are two ways to edit PDFs on iPhone: one is to use the system's own "file" app for basic editing, such as adding text, highlighting, signatures, etc.; the other is to use third-party tools such as Adobe Acrobat to achieve more complex text modification. The specific steps are as follows: 1. Edit with the "File" App: After opening the PDF, click the "Tag" button to add text boxes, set highlights or delete lines, click the " " sign to insert handwritten signatures; 2. Use a third-party app to process: For example, Adobe Acrobat supports editing original content, including adjusting text, font size and paragraph position, PDFExpert or WPSOffice is also a good choice; 3. It is recommended to save the copy first before editing and use "Share"

Modifying the screen resolution on a Mac requires system settings and terminal commands. The specific steps are as follows: 1. To change the built-in screen resolution, you need to go to System Settings > Desktop and Screen Saver > Monitor > Advanced... to enable more options; 2. The external monitor can hold down Option and click "Zoom" to detect low resolution and adjust manually; 3. If the resolution cannot be adjusted, you need to check the monitor support, cable interface and graphics card performance to ensure device compatibility. When operating, refer to the equipment instructions to avoid forcibly overclocking affecting the experience.

Completely uninstalling Mac applications requires clearing residual files. There are four specific methods: 1. Manually delete the main program and check the residual files in ~/Library/ApplicationSupport/, ~/Library/Preferences/, ~/Library/Caches/; 2. Use Launchpad to uninstall the app installed in AppStore, but the configuration files may still be left behind; 3. Use AppCleaner or CleanMyMacX and other tools to clear the associated files in one click, suitable for users who are not familiar with the system; 4. Use special software such as Adobe and ParallelsDesktop to use official uninstall tools or reference official websites