For several reasons including needing NFC and a fully functional mobile web browser I need to find a LineageOS microG compatible phone to use as a tablet. I am looking for a small device, I was thinking of a Samsung S4 mini LTE(serranoltexx).
My concern in shopping for a used phone is that the bootloader would be hard locked and the device will be unusable to me, I refuse to use a stock android device.
Does anyone have ideas what to look for to get an unlockable Samsung? The only other experience I have with androids was helping with a One+1(stock Cyanogen) and a Nexus 7 which both only come with ADB unlockable or unlocked bootloaders.

(Edit - SOLVED!)
See posts 15 and 17 of this thread:
https://talk.maemo.org/showpost.php?...6&postcount=15
https://talk.maemo.org/showpost.php?...0&postcount=17
I found a Samsung S4 mini which is small and if an international I9195 is acquired it can be converted to a TWRP recovery and LineageOS 14 for microG. Post !7 details how to software disable the cellular radio and re-enable it if desired.