Yes, you can use a tripod with a smartphone or tablet by using a tripod mount or holder specifically designed for mobile devices. There are a variety of tripod mounts and holders available in the market that can securely attach your smartphone or tablet to the tripod. Some tripods also come with a universal phone mount or tablet holder that can fit a variety of devices.
Using a tripod with your smartphone or tablet can be particularly useful when shooting photos or videos in low-light conditions or when you need to keep your camera steady for longer periods of time. It also allows you to shoot hands-free, which is useful for self-portraits, group shots, or vlogging.