cant connect to wifi with iphone 4

[lewys]

hi i got an iphone 4 yesterday and i am having trouble finding wifi spots.

i went to a shopping center today and it had around 10 different wifi spots and i could only see one.

my 3 other friends has iphones (two have 3gs on has 4) and they could see and connect to them all fine. this is happening everywhere

also i cant even see my home network unless i am standing right next to the router where as the other iphones can pick it up from upstairs or in the garden.

is there anything i can do to change this like restoring or anything else?
or is it faulty?

 

[h1r0ll3r]

Restore. If the problem persists then return/exchange it.

 

[b-rad g]

Is your iPhone set up as new or did you restore from previous version iPhone (2g, 3g, 3gs)?

 

[lewys]

Is your iPhone set up as new or did you restore from previous version iPhone (2g, 3g, 3gs)?

set up as new, will i have to pay anything? i have had it less than 24 hours.
also will they give me a new one then or do i have to waitto get fixed

 

[joe414]

Hook it to iTunes and restore. It costs nothing. Click "setup as new phone"

Go to settings - general - reset - reset network settings. When it restarts it should work.