One is a sign that your phone is connected to wireless WiFi, which means that you have connected to the wireless network and can surf the Internet wirelessly.
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2 The second is your mobile phone to open the mobile phone wireless hotspot network, in addition to the mobile phone through the hotspot to connect your mobile phone to share the wireless network, of course, the first is that you agree to other mobile phone can use the network, if not particularly needed, usually it is best not to open the mobile phone hot spot, because after opening the hot spot, the mobile phone power consumption will be greatly increased, the battery life will be greatly shortened.
Because you are connected to two WIFI, that is, the phone supports two WIFI
This should be caused by the system, normally, there is only one or none.