Yes, you can use your iPhone without Wi-Fi. Your iPhone can still function using cellular data, which allows you to access the internet, send and receive messages, make phone calls, and use various apps that require an internet connection.
Additionally, you can use many functions on your iPhone offline, such as:
- Making phone calls and sending SMS/MMS
- Taking photos and videos
- Listening to downloaded music or podcasts
- Playing offline games
- Using apps that have offline capabilities, like note-taking or document editing apps
Keep in mind that using cellular data may incur charges depending on your mobile plan, so check with your carrier for details.