Mouse support has finally arrived on the iPad and iPhone with iPadOS 13 and iOS 13. Bluetooth is your best option if you want to set up mouse support on the iPhone or iPad. It’s fast, relatively easy, and it’s also stable. Make sure your Bluetooth mouse isn’t already paired with another device. If it is, unpair it, and then reset the mouse so it enters pairing mode. How you unpair it will depend on your mouse and whatever it’s paired to. If your mouse is paired to Mac, open the Bluetooth settings, hover over the mouse, and then click the X that appears next to its name. Now, it’s ready to pair with an iPhone or iPad.
How to use a mouse with your iPad or iPhone
Open the Settings app.
Scroll down to Accessibility and press it.
Press Touch under the Physical and Motor section.
You should see a toggle for AssistiveTouch at the top. It will likely read Off. Press it.
Turn on AssistiveTouch through the toggle at the top.
Scroll down to Pointing Devices. Press it.
Press Bluetooth Devices.
Grab your Bluetooth mouse and set it to pairing mode.