Screen replacement is one of the most common issue with iPhone 4S (A1431/A1387). GR Phones offers all repair works from screen replacement, battery replacement, charging port replacement, Home Button replacement and all major repairs so that you can make the most out of it. In most of the cases, your iPhone is repaired while you wait and even before you finish reading a magazine. That is why we stock a variety of parts which enables us to fix your iPhone as quickly as possible so that we can avoid to keep you waiting for long. Call your nearest GR Phones store to get an estimate, should your iPhone needs to be repaired.