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