Can I connect my Magic Mouse2 to my iPhone15 pro max?

It is NOT compatible with any iPhones as far as I've known.

Magic Mouse

Compatibility:

iPad Models

• iPad Pro 13-inch (M4)
• iPad Pro 12.9-inch (6th generation)
• iPad Pro 12.9-inch (5th generation)
• iPad Pro 12.9-inch (4th generation)
• iPad Pro 12.9-inch (3rd generation)
• iPad Pro 12.9-inch (2nd generation)
• iPad Pro 12.9-inch (1st generation)
• iPad Pro 11-inch (M4)
• iPad Pro 11-inch (4th generation)
• iPad Pro 11-inch (3rd generation)
• iPad Pro 11-inch (2nd generation)
• iPad Pro 11-inch (1st generation)
• iPad Pro 10.5-inch
• iPad Pro 9.7-inch
• iPad Air 13-inch (M2)
• iPad Air 11-inch (M2)
• iPad Air (5th generation)
• iPad Air (4th generation)
• iPad Air (3rd generation)
• iPad Air 2
• iPad (10th generation)
• iPad (9th generation)
• iPad (8th generation)
• iPad (7th generation)
• iPad (6th generation)
• iPad (5th generation)
• iPad mini (6th generation)
• iPad mini (5th generation)
• iPad mini 4

Mac Models

• MacBook Air (13-inch, M3, 2024)
• MacBook Air (15-inch, M3, 2024)
• MacBook Air (15-inch, M2, 2023)
• MacBook Air (13-inch, M2, 2022)
• MacBook Air (M1, 2020)
• MacBook Air (Retina, 13‑inch, 2020)
• MacBook Air (Retina, 13-inch, 2018–2019)
• MacBook Air (13-inch, Early 2015 - 2017)
• MacBook Air (11-inch, Early 2015)
• MacBook Pro (13‑inch, M2, 2022)
• MacBook Pro (13-inch, M1, 2020)
• MacBook Pro (13-inch, 2020)
• MacBook Pro (13-inch, 2016–2019)
• MacBook Pro (Retina, 13-inch, Late 2012 - 2015)
• MacBook Pro (14‑inch, 2023)
• MacBook Pro (14‑inch, 2021)
• MacBook Pro (16‑inch, 2023)
• MacBook Pro (16-inch, 2021)
• MacBook Pro (16-inch, 2019)
• MacBook Pro (15-inch, 2016–2019)
• MacBook Pro (Retina, 15-inch, Mid 2012 - 2015)
• MacBook (Retina, 12-inch, Early 2015 – 2017)
• iMac (24-inch, M3, 2023)
• iMac (24-inch, M1, 2021)
• iMac (Retina 4K, 21.5-inch, 2017)
• iMac (Retina 5K, 27-inch, 2019–2020)
• iMac (Retina 5K, 27‑inch, 2017)
• iMac (Retina 5K, 27-inch, Late 2014 - 2015)
• iMac Pro (2017)
• Mac Studio (2023)
• Mac Studio (2022)
• Mac mini (2023)
• Mac mini (M1, 2020)
• Mac mini (2018)
• Mac mini (Late 2014)
• Mac Pro (2023)
• Mac Pro (2019)
• Mac Pro (Late 2013)

There is no iPhone on this list. So no, you can't.

I'm a bit confused. The Magic Mouse 2 is a Bluetooth device, not a cabled mouse. So either you've misspoken about the mouse you have, or you're trying to do something odd (the only socket on a Magic Mouse 2 is on the bottom of the mouse).

If you actually do have a Bluetooth mouse, try this:

1. Go to Settings -> Accessibility and select Touch.
2. Select AssistiveTouch -> Devices, then select Bluetooth Devices.
3. Select your device from the list.

Hope this helps.

I tried to pair my Magic Mouse with my iPhone 12 Pro running iOS 18 via Bluetooth and I can't get it to be recognized either. So apparently it is indeed not supported, though I can't guess why it wouldn't be. It's almost certainly not going to work via cable.

Regards.

You can use the mouse with your iPhone, but you do NOT connect it to your iPhone. The connection on the mouse is for charging ONLY. varjak paw provided the correct details to connect the mouse to your iPhone.