How to spot a fake or non-genuine replacement phone screen
Quick answer: On an iPhone 11 or later, open Settings, then General, then About and look for Parts and Service History: "Unknown" next to Display means it isn't a verified genuine screen. On any phone, check for dead touch spots, a yellow or blue tint, low maximum brightness and auto-brightness that no longer works.
Video not loading? Open the video on YouTube. It may not match your exact model; check the written guidance and device scope before following it.
The fastest check on an iPhone
On an iPhone 11 or later (not iPhone SE 2nd or 3rd generation):
- Open Settings and tap General.
- Tap About.
- Scroll down to Parts and Service History.
This section only appears if the iPhone has had a repair. If Display shows Genuine Apple Part, the screen is Apple's. If it shows Unknown with an exclamation mark, Apple says the display may not be genuine, may have been modified, or wasn't linked to the phone after the repair. On iOS 15.1 or earlier the message reads Important Display Message instead. An Unknown part can lower the phone's trade-in value.
Checks that work on any phone
Cheap replacement screens tend to fail in the same ways. Try each of these:
1Touch across the whole screen
Open a drawing or notes app and drag one finger slowly across every edge and corner. Gaps in the line, missed taps, or touches you didn't make point to a low-quality digitizer. Also check whether the screen turns off when you hold the phone to your ear on a call.
2Look at colour and brightness
Open a plain white page at full brightness. A yellow or blue tint, uneven brightness, or a noticeably dimmer maximum than a similar phone are all common with non-genuine panels. Many cheap replacement screens are LCD copies of an original OLED: blacks look grey in a dark room and the glass sits slightly thicker.
3Test auto-brightness
Turn on automatic brightness and cover the top of the phone with your hand. If the screen doesn't react, the light sensor may not be working with the new display. On iPhone, True Tone may also be missing from Control Center.
4Watch the battery
Apple lists unexpected battery drain as a possible side effect of a non-genuine display.
Buying a used phone or getting a repair
Run these checks before you pay. Ask the repair shop in writing whether they fit original or aftermarket screens. On an iPhone, a genuine part fitted through Apple's repair process shows as Genuine Apple Part in Parts and Service History.
What to tell support
Keep a short record of your exact device model, software or app version, the symptom or error text, and which steps you tried. Note what changed after each step. You can print this page for reference.
Do not include passwords, recovery codes or private account details in public comments.
Sources
Video by FixIt Mobile on YouTube. See the linked sources for current manufacturer guidance. Menu names and available features can vary by model and software version. How we check fixes.