Help wifi issue

[smurph1]

My father is having an issue, only at home at present, where his Ace2 (I8160) keeps connecting to his BT Openzone rather than his standard wifi....which to resolve i have to cancel and forget the std wifi connection and re-configure to connect.
My HTC OneX connects satisfactorily.

Any ideas?

 

[smurph1]

It remembers the last wifi connection used, when in effect it should be setup so that a favourite one can be stored for use in a home loaction!