@[email protected]
Also, I've found #Kimovil's website (https://www.kimovil.com/en/) and #GSMArena (https://gsmarena.com) quite useful when comparing phones, and finding phones that fit a customisable set of criteria (OS version, dual-SIM support, SD card slot, resolution, screen size, price range, etc).
#TechTablets.com has an informative #YouTube channel as well, and a playlist of mobile phone reviews: https://www.youtube.com/playlist?list=PLVJ5yuUCk8wCD57ZG3xh1vNddiLDBwvAb
AFAIK he buys all his devices himself, so he's prob fairly unbiased