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Service Pack, Genuine, Refurbished or Aftermarket: Spare Part Quality Grades What the Genuine OEM, Service Pack, Original Used, Refurbished and Aftermarket labels on spare parts mean — and how to pick a grade for the repair and the budget. Read → Apple Watch and iPhone Screen Glass Polishing: When It Helps and When Replacement Is Needed Scratches on watch glass are polished, but on iPhone screen - almost never. Why is this, how to distinguish one case from another and what to do with each. Read → iPhone Screen Glass Replacement: How It's Done and Why a Cleanroom Matters The screen glass is replaced without replacing the display matrix: the old one is cut with a wire, the new one is laminated under pressure. We show the entire process and explain where dust particles under the screen come from. Read → iPhone Screen Glass Adhesive: How to Damage Your Display in One Minute UV glue flows under the display assembly and polymerizes there permanently. How this ends, what glue is used in the service, and what to do if you've already poured it in. Read → iPhone Polarizing Film: When the Image Is Dim But the Display Is Intact A whitish or too dark image at an angle — often not the matrix, but the polarizer. It is replaced separately, and it is cheaper than the display assembly. Read → Cracked screen glass iPhone: replace glass or display assembly When it's enough to replace just the screen glass, and when you'll need to install a display assembly: a five-minute check and honest price difference. Read → Blurry photos and spots on iPhone camera: why it happens Blurry photos, halos around lights and spots in photos: when the camera glass is at fault, when it's dust under it, and when it's the sensor itself. Read → Quiet or crackling iPhone speaker: causes and repair The other person can barely be heard, music crackles, but the speaker works fine: how to understand in a minute which speaker is actually to blame. Read → Broken iPhone back cover: can you replace only the glass The back cover of iPhone is replaced separately from the housing — without replacing the entire housing and while preserving MagSafe. When this is possible and what is important. Read → iPhone Screen Burn-in: Causes, Signs, and What to Do Why do 'ghosts' appear on OLED displays, how to distinguish burn-in from matrix defects and when the display needs to be replaced. Read → Spots and Black Dots on iPhone Screen: Why They Appear and How to Remove Black dots, ink stains and light spots on the iPhone screen: what can be repaired, what cannot and when you need to hurry. Read → Why iPhone Drains Quickly: When the Battery Is to Blame How to distinguish a worn-out battery from an app that drains the charge in five minutes, and what to do about it. Read → iPhone Won't Turn On After Liquid Damage: What to Do Immediately Liquid inside iPhone is measured in hours: what to do in the first minutes, what never to do and why "dried and works" is a trap. Read → Face ID Not Working After Display Replacement: Why and What to Do Face ID is tied to the logic board, not the display: why it disappears after display assembly replacement, what can be fixed and what cannot. Read → When to Replace iPhone Battery: Signs and Calibration Capacity below 80%, sudden shutdowns, and housing swelling are three signs after which battery replacement should no longer be delayed. Read →