Android Question Local network using the Wi-Fi module of the smartphone.


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I wanted to create a local area network between 3 smartphones, using Wifi modules of the 5th generation. In the future, I wanted to place on one of them a SQL database server that 2 other smartphones can access to it. I won't be using a WiFi router. Only 3 smartphones to work within the range of Wi-Fi modules. Maybe similar examples or solutions have already been created?