Hi, I have a question how do I check the following info on the iPhone? for ex: Serial starts F2LS. Model: A1784 Factory: F2L - China, Zhengzhou - Foxconn Year: 2016 Week: 43 (24.10 - 30.10) Age: Infant I See a lot of this infos inside threads, but I don't know how to check them? When buying iPhone :/ (hope newer models will be less faulty) I returned my 7 Plus jet black/128gb - since the screen was yellow compared to the other iPhone 7 plus models inside the store, and the employee agreed with me... It was silent no hissing under load BUT on videos it was present as a sound "white noise" I'm so mad & dissapointed with the quality of apple products, but I have to admit the worse are the screens I don't know how they made it maybe in garage.. Thanks for help guys! P.S - I bought the phone in Poland where i live.