B4X FEED Transfer files between two smartphones via WiFi

[practicalsoft]

What options exist for transmitting information (short text file) at a distance of 500-1000 meters, without using a cellular connection. I have experience in using dron (quadrocopters), where the communication range with smartphones when using Wifi 5 is guaranteed at least 1 km, in the absence of interference in the city 100-200 meters.

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