Device Tree Patches Posted for Review to Boot Linux on Apple A7 to A11 Devices
phoronix.com
phoronix.com
But if you remove the battery and mod the phone to power it directly from an external power supply you're all set!
"This series adds device trees for all A7-A11 SoC based iPhones, iPads, iPod touches and Apple TVs."
"The following is supported on A7-A10: - gpio-keys The buttons on A11 based devices like the iPhone X is a SMC subdevice, and cannot be supported in this way."
There are some workarounds (open the phone, solder a power supply to the battery terminals, add a capacitor and a resistor for good measure) but you'd need quite a repairable phone to pull that off easily.
I've always liked that demo of some person running a tiny ARM k8s cluster on his old Oneplus 1, but I'm not sure if I'd like to put the effort in to make it actually be usable in the long term. Still, the above-average transcoding abilities of pretty much every mobile SoC of the last decade and a half could be an interesting addition to a small home lab.
Like a Linux phone or more like a raspberry like device?