Question [Q] WIFI Problem

I have two phones Xperia X2 and X10 Mini, I have installed WiFiRouter on My X2 and the I am trying to get my X10 Mini connected to it so I can use internet, But my X10 mini is not recognising it as a WiFi access point, while as I tried to connect some other phone, it did. My X10 mini is recognising other wifi available network but not of my Xperia X2, can anyone help ?