Before you begin
Use this guide to remove or replace the logic board in an iPhone 15. You'll need replacement back glass and screen adhesive to complete this repair. If the battery is swollen, take appropriate precautions and follow this guide to replace it. Due to Apple's parts pairing restrictions, much of your iPhone's functionality depends on the logic board. If you use all genuine parts, run Apple's Repair Assistant (introduced in iOS 18) to avoid any issues. Otherwise, to retain full functionality, you must also replace the following parts with ones that are paired to the replacement logic board: Screen (to retain True Tone and Auto-Brightness)Front Camera and Sensors (most functionality)Battery (to retain battery health data)