Probably a bit better than your phone, depending on models (phone, extender, router), of course. At least in theory repeaters can have better antennas and more power to spare.
If you can put a network cable though at least one of the walls you might as well just put an outdoor AP (main building) or WiFi bridge (shed) there. That way the signals only have to go through one wall.
You can set up a mobile Hotspot without phone reception. The Hotspot won’t have any working internet connection, but you will still be able to judge the signal strength, and even measure the speed using iperf
Go stand with your phone where you’d expect to place the extender.
If it gets a strong signal, you are probably fine.
It’s good, not excellent, does it mean with the extender the signal in the office will be good or just weak?
Probably a bit better than your phone, depending on models (phone, extender, router), of course. At least in theory repeaters can have better antennas and more power to spare.
If you can put a network cable though at least one of the walls you might as well just put an outdoor AP (main building) or WiFi bridge (shed) there. That way the signals only have to go through one wall.
You can put your phone in hotspot mode and place it where the extender should go, then see how good the signal in the office is.
That’s a good idea but unfortunately i have terrible cell reception and my mobile is useless without wifi.
You can set up a mobile Hotspot without phone reception. The Hotspot won’t have any working internet connection, but you will still be able to judge the signal strength, and even measure the speed using iperf
So hotspot the wifi?
I can do that? I never tried, I assumed it wouldn’t make sense to hotspot wifi.
You can at least on android and I thought ios too now but idk
I think it will partially depend on the model of extender you bought.
Literally nothing else helps. That distance could be void or filled with lead blocks.