13Mini+Lockdown mode user reporting here: I did a battery upgrade alongside the iOS 26 upgrade, and regretted switching to iOS26. It slowed down things wayy to much, the keyboard often lagged by dozens of keystrokes, and the camera app stopped working with 26.1.

I gave up yesterday, and disabled lockdown mode (and upgraded to 26.2). Seems fine now, but liquid glass is still a usability nightmare.