I have recently bought Rasberry Zero W. Since I wanted to get original top quality item I bought it at PiHut.
Nevertheless, I still have problems with the unit; as it has incredibly poor WiFi signal. When about 2 m from the AP (one wall in between), signal is only -72dBm to -82dBm depending on the unit orientation, as checked by iwconfig command.
I have tried two different SDcards, two different power supplies, without significant change. I also put my Raspberry Pi 3 on the same spot and I got signal -56dBm (I haven't tried different orientations, just for comparison).
Is such small signal normal for Raspberry Zero W? Should I perhaps asked for a replacement?