You may have noticed the new additions to our iPhone 7 Plus and iPhone 8 Plus line-up. These are new AA and incell options labeled DTP (LG) and C11 (Toshiba). If you’re new to the iPhone repair industry, you may not have come across these codes yet. However, since 7 and 8 series repairs are more common than they used to be, it’s important to be aware of these codes in order to get the correct part for your repair.
These codes are actually part of a longer set of serial numbers (typically the first 3 characters) printed on the back of OEM displays and are specific to the manufacturer who made the display.
Codes by Manufacturer:
The screens we stock only use the C11 and DTP labels, but you may see the others on the devices you work on.
A C11 (Toshiba) iPhone LCD, with its serial number stamped at the bottom end of the display. Image via webuylcds.
While the screens are all developed for the same device (like the 8 Plus, for example), each screen manufacturer uses different touch configurations, which are then calibrated to the phone during assembly. When performing a screen replacement, it’s important to purchase a screen that matches the manufacturer of the original OEM part in order to avoid the chance of touch issues developing after the repair.
It should also be noted that touch issues may not always develop, since calibrations vary. When mixing and matching screens, the probability of touch issues can differ, depending on how the parts are mixed. Exact numbers vary depending on the source, but here is a brief summary of what is known.
Probability of Touch Issues:
Additionally, issues can be complicated further by some display refurbishers who mix and match touch panels and LCDs during the refurbishment process. Imagine the possible problems if you had a Toshiba touch panel paired with a Sharp LCD and installed onto a LG-calibrated phone!
The bottom line- try to match a replacement screen to the manufacturer of the original. That way you can reduce the chances of problems developing. So for example, if the original was a C11 screen, replace it with a C11 screen.
As for fully-aftermarket screens (such as our HQC and Premium/Premium Plus qualities), they typically do not have this compatibility issue. Touch programming on aftermarket parts is developed from the ground up, and tested on a wide variety of iPhones. As a result, compatibility issues tend to be very low.
Lastly, if the phone already had an aftermarket screen installed, but you would like to replace it with an original refurbished part, you can use a program like 3uTools to read the device and determine which screen manufacturer was calibrated to it.
We hope you find this article helpful in picking the right part for your repair. To reiterate, this issue mostly just applies to iPhone 7 Plus and 8 Plus devices, and only when using refurbished or “best quality” replacement screens (such as our AA line of screens) or any screens made using recycled original parts.
Disclaimer: Maya Parts, Inc. is a third-party provider, and our AA / Best Quality screens are generic screens that are comprised of generic glass panels with recycled digitizers and LCD/OLED displays. All product names, logos, and brands are the property of their respective owners, and their use does not imply affiliation with or endorsement of Maya Parts, or our products.
Sources Used in this Article: