Screen Replacement Specialists · Sin Tat Plaza, Mong Kok

iPhone Screen Replacement | On-Site Repairs for Cracked Glass and Damaged Displays

For cracked iPhone glass, damaged display panels, black screens, green lines, distorted images or unresponsive touch after a drop, Mobile Repair Pro Shop starts with a free inspection. We determine whether only the outer glass needs attention or the whole display assembly needs replacing, then explain the display type and its implications for Face ID, True Tone and Parts and Service History. Work starts after quote approval. Most replacements take 20–30 minutes on site, with brightness, colour, touch and Face ID tested before collection.

Common symptoms of a damaged iPhone screen

  • Broken glass but the image still displays
  • Black spots, patches or ink-like spreading marks
  • Green lines, a white or distorted screen, or flickering
  • Touch failure, ghost touches or unresponsive areas
  • Display suddenly dims or shows abnormal colours
  • Completely black screen but sound and vibration still work
  • Screen edges lifting or separating from the body
  • “Important Display Message” appears

Quick answer: Most iPhone screen replacements take 20–30 minutes. First determine whether only the outer glass is cracked or the display panel is damaged too. Black spots, green lines, a white screen or unresponsive touch usually require a complete display assembly. Professionally performed replacement normally leaves Face ID unaffected. However, Apple states that True Tone may not work correctly on non-genuine displays, and Parts and Service History shows “Unknown”, although normal use is unaffected. Always ask which display will be fitted. We are at Shop G81B, G/F, Sin Tat Plaza, Mong Kok (MTR Exit D2), offering free inspection and a clear explanation of the display type before you approve the quote.

Types of screen damage

Cracked glass or damaged panel? Types of iPhone screen damage

An iPhone display consists of outer glass, a touch layer and an OLED panel. Symptoms can give an initial indication of which layer is affected; the technician's free inspection confirms the diagnosis.

Symptoms Potentially damaged parts Typical approach
Cracked glass but normal display and touchOuter glassInspect first; only the outer glass may need attention
Black spots or patches that gradually spreadOLED display panelUsually requires a full display assembly replacement
Green lines, white screen, distorted display or flickeringDisplay panel or flex cableInspect first to distinguish the fault; a full display assembly is usually needed
Touch failure or ghost touchesTouch layer, flex cable or softwareRule out software problems before deciding on screen replacement
Completely black screen but sound and vibration still workDisplay panel, flex cable or logic boardInspection first; see iPhone Repair
Screen edges lifting or bulgingA swollen battery may be pushing up the screenStop using it immediately; see iPhone Battery Replacement
Display problems after liquid exposureDisplay panel or board affected by liquidTreat the liquid damage first; see Phone liquid damage repair

*These are general examples only. The damaged components must be confirmed by an in-person inspection.

Our Repair Process

iPhone screen replacement process: from free inspection to full testing

01

Free check

We check and record the display, touch, Face ID and True Tone before repair.

02

Explain the display type and quote

We determine whether glass-only or complete display replacement is needed, explain the display type and possible effects, and start with your approval.

03

On-site replacement

We open the phone carefully and protect Face ID sensors and flex cables. Most repairs take 20–30 minutes.

04

Complete testing

Test brightness, colour, touch, Face ID, True Tone, the front camera and earpiece before collection.

In-Depth Guide

iPhone screen replacement guide: display types, Face ID, True Tone and parts history

Last updated: October 2026

The key question before screen replacement: which display will be used?

The price and results of an iPhone screen replacement depend largely on display type. Common options are genuine Apple displays, original-quality OLED displays and LCD displays. They differ in colour, brightness, touch response, power consumption and system recognition:

Criteria Genuine Apple display Non-genuine Apple display (OLED / LCD)
Parts and Service HistoryShows “Genuine” after completing Apple's proceduresShows “Unknown”
True ToneWorks normally after completing Apple's proceduresApple says it may not function correctly
Touch, colour and brightnessOriginal specificationsDepends on display quality; Apple notes possible problems
Trade-in valueUnaffectedApple says “Unknown” parts may affect trade-in value
Daily usePASSApple says status messages do not affect normal use

*Refer to Apple's official guidance for differences between genuine Apple and non-genuine displays. We will explain the display options and prices after inspection.

We clearly explain the display type and possible effects before repair, so you can choose according to your budget and use without ambiguity. For more about parts quality, see Parts quality explained.

What is Parts and Service History, and what appears after screen replacement?

Apple states that on iPhone 11 and later, excluding iPhone SE (2nd and 3rd generation), you can check Parts and Service History under Settings → General → About to see whether the display was replaced. This section appears only after a repair:

  • Genuine: Repaired using genuine Apple parts and procedures.
  • Used: On iPhone 15 or later with iOS 18 or later, this message appears if the display was previously used or installed in another iPhone.
  • Finish Repair: Appears after fitting a new Apple display until Repair Assistant completes the process.
  • Unknown: The display is not genuine Apple, is malfunctioning, has not been verified and linked after repair, or has been modified.

Apple also states that parts marked “Unknown” may affect a device's trade-in value, although these status messages do not affect normal iPhone use. If you plan to trade in your phone, tell the technician before replacing the screen so you can compare the options.

Could Face ID stop working after screen replacement?

Face ID uses the TrueDepth camera above the display; its sensors are separate from the screen glass. A professional screen replacement that handles the sensors and flex cables carefully normally leaves Face ID unaffected. Damage to the relevant flex cables during opening can disable Face ID, so technique and experience matter. We test Face ID before repair and again before returning the phone to confirm it works.

If Face ID stops working after screen replacement, Apple recommends cleaning the TrueDepth camera area, removing obstructing protectors or cases, restarting, then selecting Reset Face ID under Settings → Face ID & Passcode and setting it up again. If it still fails, bring your warranty document back for inspection.

Will I lose True Tone after screen replacement?

True Tone adjusts the display's colour temperature to ambient light. Apple states that it may not work correctly with non-genuine displays. Touch, colour and brightness problems may also occur, such as unresponsive areas or a yellow or blue tint. Ask about the display type before replacement and check True Tone and colours at collection. We test these with you before handing back the phone.

Before repair, know: Apple states that on iPhone 12 and later with iOS 18 or later, a newly installed genuine Apple display must complete Repair Assistant before “Genuine” appears. Non-genuine displays cannot be verified through Repair Assistant and continue to show “Unknown”. Resetting or updating iOS does not change this because the system checks the part itself.

Can I ignore a cracked iPhone screen if it still works?

Do not leave it too long. Cracks can spread with daily use and temperature changes; glass fragments may cut your fingers. Gaps also let dust and moisture enter, potentially affecting display and touch or turning a glass-only repair into full display replacement. A screen protector can provide temporary protection for minor cracks, but arrange inspection promptly. Although iPhones have water-resistance ratings, Apple says this protection is not permanent, and sealing is even less certain after screen damage.

Official versus independent iPhone screen replacement: which suits you?

If you have AppleCare+, check with Apple first. Apple's Hong Kong website states that AppleCare plans provide service for accidental drops, while the limited warranty excludes accidental damage. Out-of-warranty devices without AppleCare+ require paid repairs; for example, the estimated iPhone 18 Pro screen-damage charge is HK$3,249 (October 2026; subject to Apple's latest prices). Apple's repairs and replacement parts are covered for 90 days or the remaining warranty period, whichever is longer.

Criteria Apple or authorised repair service Our shop (independent phone repair specialist)
Best suited toAppleCare+ or a priority on genuine parts historyOut of warranty, no AppleCare+ or urgent same-day collection
Display typeGenuine Apple displayDisplay type and possible effects explained before repair
TurnaroundDepends on official arrangementsMost in 20–30 minutes
Warranty90 days or the remaining warranty period, whichever is longer1–3 months' written warranty (subject to the warranty document)
Parallel imports and used phonesHandled according to official policyAccepted — diagnosed then quoted

*Official terms are subject to Apple's latest information. Our terms are stated in the in-person quotation and written warranty. We are not an Apple Authorised Service Provider.

5 things to prepare before screen replacement

  • Back up first: Screen replacement normally does not involve the logic board, but back up first as a precaution.
  • Make sure you know your passcode: The phone needs unlocking to test Face ID and touch at collection.
  • Remove the phone case and screen protector: Helps us inspect the screen edges and body.
  • Explain what happened: Whether it was dropped, crushed or exposed to liquid, and whether the screen has been replaced before.
  • Confirm the display type:, along with the effects on True Tone and parts history, and the warranty period.

How can I protect my replacement screen?

After replacement, use a screen protector and an impact-protective case to reduce the chance of another cracked screen. Apple warns that protectors obstructing the TrueDepth camera may affect Face ID, so keep the upper sensor area clear. Remember that the written warranty does not cover damage from subsequent drops.

For other iPhone problems, see iPhone Repair, iPhone Battery Replacement and Charging Port Repair; Android users can read Samsung Repair and Pixel repairs. For more practical advice, see Phone repair guide and Phone repair FAQs.

Why Choose Us

Why choose Mobile Repair Pro Shop for an iPhone screen replacement?

20+

years of phone repair experience

A permanent shop at Sin Tat Plaza, Mong Kok, not a mobile stall—repairs with an established point of contact.

20-30

minutes for on-site completion

You can wait for most iPhone screen replacements without leaving the device.

Explained clearly

Display type

We explain the display type and effects on True Tone and parts history before repair.

1-3 months

Written Warranty

Screen replacement includes a written warranty, subject to its terms.

FAQ

iPhone screen replacement FAQs

Most iPhone screen replacements take 20–30 minutes after the free inspection while you wait. WhatsApp your model first so we can prepare the parts.

Face ID is generally unaffected by professional handling. Its TrueDepth camera is separate from the screen glass, but the associated sensors and flex cables need careful handling during screen replacement. We test Face ID on site before returning the phone.

It depends on the display. Apple states that non-genuine displays may affect True Tone, touch, colour or brightness. We explain the display type and possible effects before you approve work, then test on site before collection.

Apple states that iPhone 11 and later, excluding iPhone SE (2nd and 3rd generation), show Parts and Service History under Settings → General → About. Repairs using genuine Apple parts and procedures show “Genuine”; non-genuine or unverified displays show “Unknown”. This may affect trade-in value, but Apple says the status messages do not affect normal iPhone use.

Not necessarily. The technician checks the display panel and touch function. If both work, only the outer glass may need attention. Black spots, green lines, a white or distorted screen, or touch failure usually require the full display assembly.

Do not leave it too long. Cracks can spread, glass fragments may cut your fingers, and gaps let dust or moisture enter, potentially affecting display and touch. A screen protector can temporarily cover minor cracks, but prompt inspection is still recommended.

The main differences are colour, brightness, touch response and power consumption. Genuine Apple displays can be verified through Apple's procedures. Non-genuine displays show “Unknown” in parts history, and features such as True Tone may be affected. We explain the display type so you can choose according to your budget and needs.

Check with Apple first. Apple's Hong Kong website states that AppleCare plans cover accidental damage such as drops. Without AppleCare+, after warranty expiry or for urgent same-day collection, consider our shop.

Screen replacement normally does not involve the logic board or erase data, but we recommend backing up beforehand as a precaution. See Data backup and recovery.

Apple recommends cleaning the TrueDepth camera area, removing any obstructing screen protector or case, restarting the phone, then resetting Face ID under Settings → Face ID & Passcode. If it still fails, a related sensor or flex cable may have been affected during repair. Bring the device and warranty document back for inspection.

Screen replacement includes a 1–3 month written warranty, with the exact period stated in the document. It generally covers component faults, not subsequent drops, crushing or liquid exposure.

We repair the iPhone 12 series through to the latest models. Parts for newly launched models depend on availability; older models can also be discussed. WhatsApp your model first to confirm stock.

Get In Touch

Cracked your iPhone screen? WhatsApp us or visit our Mong Kok repair shop

Mobile Repair Pro Shop information

  • Address Shop G81B, G/F, Sin Tat Plaza, 83 Argyle Street, Mong Kok, Kowloon, Hong Kong (MTR Mong Kok Station Exit D2)
  • Phone / WhatsApp +852 9839 0831
  • Opening Hours Mon–Sun 11:00–20:00

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