You can Use Your Android phone as WIFI Repeater

Requirement: 

1) Android Phone with App Store access.
2) WiFi Access point

Steps:

1) Download "fqrouter2" App From your App Store.

2) Install and open the fqrouter2 app on your phone and configure it for WiFi repeater as mentioned bellow.

3) Turn on Wifi Repeater option in fqrouter2 App and keep other option as it is, This will turn on your wifi repeater function.

 4) Now Configure your WiFi Repeater signal for configure tab, Enter any name you like in SSID field and enter security password.

5) That's It, Now Check your wifi signal and connect the same with given SSID and Password and Enjoy the trick