the RTL8723BS it's 2,4ghz B/G/N and bluetooth 2.1, 3.0 and 4.0.
For ESP8266, it is 2,4GHz B/G/N
Multiple simultaneous connections are possible but I don't know how many client can support Simultaneous .
Some Wifi module can have up to 10 clients.
For ESP8266, it is 2,4GHz B/G/N
Multiple simultaneous connections are possible but I don't know how many client can support Simultaneous .
Some Wifi module can have up to 10 clients.