Welcome to Fast mail-in Repairs


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Arguably the most common repair on any mobile phone is the replacement of the screen unit and the iPhone is no different, with a whopping £204m spent on iPhone screen repairs in 2018 in the UK alone (statistics are based and extrapolated from The Independent, 13th September 2018) .

The problem however, is that many iPhone screen repair companies have to contend with  fluctuating screen quality.

iPhone screen repair - quality inspection - glass alignment - celltech Labs
Alignment of glass onto iPhone screen - celltech contract manufacturing ©

The Best Non Apple iPhone Screen

At celltech Labs we experienced this frustrating problem too, as sourcing consistently high quality iPhone screen stock was not an easy task.

We wanted to discover if there was a way to maintain screen quality to a recognised industry standard. Would it mean visiting factories and sourcing  from a preferred supplier who could guarantee screen quality based on our strict requirements or could we keep our options open and maintain relationships with several suppliers.

This search led to us to sample batch testing from several ISO9001 approved manufacturers. To conduct a controlled benchmark comparison these iPhone screens had to be tested and measured against the following quality criteria.


Brightness & Vibrancy

Colour Reproduction

Refresh rate & Lag

Overall build quality

Ultimately we had to go out and source separately the best screen components and have them contract assembled.

iPhone screen repair - quality inspection - power on test - celltech
Power on test of a celltech iPhone screen ©


Genuine or Copy

We take great pride in offering our customers a professional and honest service so when we are posed the question ‘do you fit genuine Apple iPhone screens or are they copies? We can answer with confidence and pride that celltech iPhone screens are as good as the genuine article in every respect.

Most iPhone users are not aware that Apple don’t sell their screens to third parties, it’s a very tightly guarded supply chain.

Apple Inc certainly manufacture the best and most expensive iPhone screens, they have a little experience in this field! (screen production has been outsourced to Foxxcon, Samsung for OLED screens, LG and Japan Display).

We now offer our customers the option of ‘original refurbished’ or ‘celltech aftermarket’ iPhone screens. The ‘original refurbished’ screens have only had their top glass unit replaced, the rest of the unit, including the display is taken from an Apple iPhone.

Learn more about the difference between genuine 'refurbished' iPhone Screens and 'Copies' 


iPhone screen repair - quality inspection - colour test - celltech Labs
celltech iPhone screen colour rendition test ©


Our Manufacture Process

 Physical product build quality is a very important consideration.

This is making sure the screen is bonded to the subframe properly, if this is not done correctly it can result in the screen coming away from the subframe.

Our screens are bonded with a lumio-sensitive adhesive and cured with UV light. This process provides added strength between the screen and the subframe and stops it from separating.
The screens that we provide are made to the highest industry standards and are exclusive to celltech Labs. We are so confident in our iPhone screen repair service that we can provide a 1 Year Warranty.

There has always been an issue with the screens not being calibrated to a satisfactory standard, colour spectrum not great, touch sensitivity not as responsive and lack of brightness on the backlight.

We make sure the screens brightness is between 420nits - 640nits depending on the model. Testing the touch sensitivity (digitiser layer)  in all areas and checking the display doesn’t exhibit dead pixels or vertical lines.

 Poor quality iPhone screen display panels will suffer from:

  • Weaker brightness, contrast and vibrancy, a washed out hue
  • Lower resolution. Display may look coarse, not pixel pin sharp
  • Increase in image lag or a reduced refresh rate, as if the screen can’t keep up.

We have a benchmark in place for all our iPhone screens and each one is tested thoroughly.

Non approved screens are also prone to breaking more easily due to the inferior quality of top glass used to bond with the display.

Less reputable iPhone screen manufacturers opt to have the touch screen element glued to the glass, the latest production techniques have rendered this process obsolete.

This significantly reduces the integrity of the screen structure and the major problem with this process is that one drop can totally stop your screen from responding to touch.

celltech iPhone screens are manufactured with the digitiser touch element cold bonded to the display so even if the iPhone suffers a major drop or impact, which results in the screen breaking or cracking the touchscreen will still continue to function.

iPhone screen repair - tray placement - celltech Labs
Final clean and tray packing ©


Substandard quality screens can also affect your iPhone’s performance i.e battery draining quickly, apps taking time to open.

iPhone’s that have the 3D touch feature may experience that this feature does not work or respond properly.

A major problem was identified when Apple released an update that bricked (rendered nonfunctional!) customers phones who had had their screen replaced.

This is was due to iTunes not recognising the new screen and touch ID (Fingerprint Sensor) commonly known as ‘Error 56’.

iPhone 8 and 8 plus screens when replaced caused the touch screen to stop functioning completely. This was caused by Apple’s update.

This update bricks the device and stops it from working completely.

There are special proprietary chips, including one that powers the touchscreen that needs to be replaced. Our screens come with these chips pre-installed, so our customers will not be affected by this.

High quality screens are made and put together using a 5 layer process, to include backlight, LCD, polariser film, touch and glass bonded to a subframe.

Our screens are made to the same specification as Apple screens, backlight, LCD with touch, polarizer and glass bonded to the subframe.

Having a separate touchscreen unit adds thickness to the overall screen, making it stand out from the edge of the phone and not fit flush

As of June 2019, IPhone X (£239.97), iPhone XS (£249.97) and iPhone XS MAX (599.97) screens only come in OLED variants which is currently reflected in the price.

iPhone screen repair - quality inspection - celltech Labs
Ready for UK dispatch ©


What is a LCD screen?

A liquid-crystal display is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals. Liquid crystals do not emit light directly, instead using a full backlight or reflector to produce images in color or monochrome.

 What is an OLED screen?

An OLED or Organic Light-Emitting Diode is a light generating process in which the emissive electroluminescent layer is a film of organic compound that emits light in response to electric current stimuli. This organic layer is situated between two electrodes; typically, at least one of these electrodes is transparent.

OLED panels are also thinner, no longer requiring the extra backlight layer, as each individual pixel is capable of produces its own tiny backlight when an electric current passes through it.

The OLED screens are only used on the flagship  iPhone X, XS and XS MAX models.The iPhone XR uses a more traditional Liquid Crystal Display, LCD the same as the iPhone 8, 8 plus and all previous generations of iPhone.


celltech iPhone Screen parameters