Are there other trust worthy distros for older not Google android devices? I remember checking out the space half a decade ago and it was dismal. IE, may brick your device, may be malware, may have worse security issues, etc.
The problem with older hardware is that all the phone kernels are such piles of kludges, and once the manufacturer stops maintaining the kernel fork and/or binary driver blobs, you get no security updates for wifi/bluetooth/baseband bugs.
