Many airports offer free Wi-Fi but the strength and stability of the signal depends considerably on where you are. Sometimes you get 3+ Mbps (still too slow IMHO but acceptable given that it's free and the place is too large) but in other cases you couldn't connect to the network even though you catch the signal, which happens too frequently. Even places where you are able to connect, the speed is mere 0.1 Mbps or so, which must be almost useless except the use of messaging apps.
Is there anything you can still do to get the better signal and/or connect to it successfully to begin with?
I have experienced that in many airports, you barely get a signal in baggage waiting and customs area. But is there any other tips and tricks, or any tendency that makes it more likely to enjoy the Wi-Fi, for example where you should be, etc...?