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.

The official Ethereum app does not exist, iOS users can manage ETH through cryptocurrency wallets or exchange apps. Recommended mainstream apps include: 1. Binance, powerful and integrated Web3 wallet, suitable for trading and DeFi; 2. OkX, with smooth experience and Web3 integration, supporting DeFi and NFT; 3. MetaMask, as the core non-custodial wallet, is a necessary tool for connecting DeFi and NFT platforms; 4. Huobi (HTX), provides rich trading pairs and financial derivatives, suitable for old users; 5. Trust Wallet, simple interface, suitable for new non-custodial wallets; 6. Gate.io, suitable for exploring emerging currencies

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.

To create PersonalVoice in iOS17, you first need to enable the feature in the settings and record a sound model for about five minutes. The specific steps are as follows: 1. Open "Settings" > "Assistance Functions" > "Narration", click "PersonalVoice" and select "Create PersonalVoice"; 2. Read the text provided by the system in a quiet environment to keep the speech speed stable; 3. After creation, you can use your personalized voice to read messages, notifications, etc. in "Narration", or switch back to the default voice; 4. Currently, only English and some languages ??are supported, and Chinese is not supported at the moment; 5. Pay attention to environmental noise, intonation consistency and storage space when recording, and re-record unsatisfactory content. Voice mode

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.