Smartphones: known problems
21 products with sourced known problems. Pick one to see what to check before you buy.
Apple9 products
Google1 products
Samsung7 products
Xiaomi4 products
Check the one you are about to buy
Kriko reads a listing and tells you which of these apply to that exact product. It runs on your computer, needs no account and is free.
These reports come from the pages linked under each item: owner forums, repair guides and workshops. They are not a diagnosis of any one unit, and a careful check of the one you are buying still applies.