Found a working Lineage OS ROM for Alcatel Idol 3 4.7. Download Lineage OS ROM and install it from TWRP.
SOOOO annoying ugggh, why make a rom for the crappy 4.7 which nobody usses and not the 5.5 lol… sorry dont take this the wrong way just annoyed such a great device and not many projects anymore ugh
Here is the Lineage OS 14.1 for Idol 3
I am not sure if this is for 4.7 inch variant or the 5.5 inch display variant.