How to Connect & Configure a Wireless Router : TP-LINK TL-MR3020 & ALL : Wifi 

NOTE: Configuration of all brand & model are almost same :This Video for TP-LINK TL-MR3020 Portable Wireless N Router..
.SET Dial up Number Manually
.SET APN Manually
.CHANGE wifi password
.CHANGE SSID
.CHANGE Admin Username
.CHANGE Admin Password