Where to buy new iphone 4 screen

you can go to Apple store to ask for some information.

apple store is one option and you ca also buy it from ebay. and ofcourse screnn replacement is low cost than buy a new phone.

According to me one Option is you can go an apple store and buy new screen or You also can go on eBay online store and buy new screen. Of course screen replacement is very cheap cost than buy a new iPhone.

good one tony you are coping the answers great bro.

generally costs £100 to take a smashed screen iphone to apple and have them replace it

I've tried that before too, but unfortunately they said they wont cover it T.T

You can purchase a digitizer+lcd combo on amazon for the 4. They only cost about $35-40 and take 45min to 1hr to install. It's not too much of a pain except for keeping up with the screws.

And on a side note is it the GSM or CDMA model?

Here are links for both AT&T and Verizon display assembly repairs.

AT&T
http://www.ifixit.com/Guide/Installing-iPhone-4-Front-G...

Verizon
http://www.ifixit.com/Guide/Installing-iPhone-4-Verizon...

Its for sure cheaper just to replace the screen then replace the whole phone. I'd recommend fixing yourself instead of taking it to the Apple store were they'll charge you an arm and a leg to replace it. I fix iPhones for my friends and family I usually order my parts off of Ebay, they usually come with all the tools needed to fix it.. screw drivers, suction cup etc.
Heres some links for screens and aswell instructions on how to replace it.
iPhone 4 Screen + Digitizer (Black).
http://www.ebay.ca/itm/Replacement-LCD-Touch-Screen-Dig...

iPhone 4 Screen + Digitizer (White).
http://www.ebay.ca/itm/White-LCD-Touch-Screen-Digitizer...

How To Replace iPhone 4 Screen (Video).
http://www.youtube.com/watch?v=iNM90pb-Xwk

The local Apple store in your area would definitely help you.. However you are unlucky you don't own an iPhone 5 because Apple is offering free replacement for broken screens...!