iPhone 4S broken screen replacement. Laptop Doctor In Brighton keeps IPhone 4S Screens and digitisers in stock at all times, and can have your Iphone screen replaced on the same day. Before: Customer came with broken front glass digitiser on iPhone 4S. Phone looked like this (shock horror broken IPhone 4S) After: An hour later (and a bit of tlc), the Phone 4s was restores to its former glory and a replacement screen had been fitted. We saved our lovely customer an expensive trip to the apple shop (they quoted £180 – we charged £40), and the customer walked out with a huge smile on his face.