iPhone does not support creating contact groups directly in the address book application, but similar functions can be achieved through the following methods: 1. Use the "Group" function in the address book application, click "Edit" > "Add Group" to create a custom group; 2. Add each contact to the corresponding group by editing it; 3. If you need to send a group message, you can create a new multi-person conversation in the information application; 4. Use iCloud or Gmail to synchronize tagged groups to facilitate the management of a large number of contacts on the computer. These methods are used in conjunction with efficient management of contact groups.

TocheckifaniPhoneisunlocked,1)gotoSettings>Cellular>CellularDataOptionsandlookforlabelslike“Unlocked”or“NoSIMrestrictions,”2)insertadifferentcarrier’sactiveSIMcardandseeifthephoneacceptsit,3)usetheIMEInumberononlinetoolslikeIMEI.infotocheckunlo

Determining the depreciation value of iPhone requires multiple factors and comparing different platforms. 2. The first choice is Apple's official replacement plan, which has a simple and transparent process, but the final valuation must be based on the actual condition of the equipment. 3. Third-party websites such as Gazelle, Swappa, etc. may provide higher quotations, but you need to pay attention to describing the real situation and avoiding the charging trap. 4. The core factors affecting value include model and storage capacity, equipment status, operator lock status, etc. Small problems may also affect the quotation. 5. If you pursue higher returns, you can choose to sell privately, but you need to weigh the time cost and transaction risks.

Migrating contacts can be accomplished in three ways when replacing a new iPhone: First, using iCloud synchronization is the most worry-free, ensuring that the old phone has turned on the iCloud address book backup, and the new phone logs into the same account and enables synchronization; Second, using AirDrop is suitable for a small number of contacts to transmit. After setting up AirDrop visibility on both phones, sending and receiving them through the share button; Third, with the help of computer relay, both Mac or Windows, synchronizing contacts through Finder or iTunes and replacing or merging data. Select the method that suits you and pay attention to your account and permission settings to easily complete the migration.

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.

The RAM of iPhone cannot be cleaned manually, but the following methods can be used to free memory to improve smoothness: 1. Close the background application: Double-click the Home button or slide from the bottom to pause and close the card; 2. Restart the phone regularly: Refresh the system status once a week; 3. Reduce background refresh: Enter Settings → General → Backend App Refresh to limit the number of applications; 4. Avoid running multiple high-resource applications at the same time, and use them in stages to reduce memory pressure. These operations can effectively alleviate the lag caused by the tight memory of iPhone.

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.