True Tone: What is it and how can I fix it?
First introduced by Apple in 2016 with the launch of the iPhone 7, True Tone was officially unveiled to the world! Creating a more natural and comfortable viewing experience for the user, the colours on the screen are more accurate and pleasing to the eye.
What exactly is True Tone?
True Tone is a display technology that uses sensors to measure the ambient light in the room and then adjusts the colour temperature of the screen to match it. This creates a more natural and comfortable viewing experience for the user. The technology uses four ambient light sensors, which are located at the front of the iPhone. These sensors measure the colour temperature and brightness of the ambient light and send this data to the iPhone's display controller. The display controller then adjusts the colour temperature of the screen to match the ambient lighting conditions.
Why does True Tone stop working?
True Tone may stop working due to various reasons, including software or hardware issues. One most the most common reasons is display replacement issues. If you have replaced your iPhone's display, then True Tone may not work properly or may not work at all. The reason for this is that the replacement display may not be compatible with the True Tone feature. The True Tone feature requires specific hardware and software components to work correctly. The hardware components include the ambient light sensor, which detects the surrounding lighting conditions, and a colour sensor, which measures the colour temperature of the display. The software components include the True Tone algorithm, which uses the sensor data to adjust the display's colour temperature and intensity. Therefore, if you have replaced your iPhone's display, it is essential to ensure that the replacement display is compatible with True Tone.
How to repair True Tone using a JCID programmer?
If True Tone is not working on your iPhone due to issues with a replacement display, then fortunately there is a way to fix this! You can attempt to repair it using a JCID programmer. A JCID programmer is a device that is used to program various components on iPhones. When you replace the screen on an iPhone, it is necessary to transfer the firmware from the broken screen to a new one in order to maintain the True Tone function. The process of transferring firmware is very easy, but for this you will need a JCID programmer. Here are the steps to repair True Tone using a JCID programmer:
Step 1 -
- Replace the screen with a new aftermarket one that is compatible with True Tone technology.
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Tap Display & Brightness in settings. You will see that the true tone option has vanished.
Step 2 -
- Begin the preparation of restoring the true tone using the JCID programmer could be a solution.
- Then we need to use the programmer to read data on the original screen. You will need the True Tone Repair Board for this step.
- Once finished, disconnect the original screen and connect the aftermarket screen.
Step 3 -
- This time we use the programmer to write the data to the aftermarket screen. Once finished, disconnect the aftermarket screen.
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Now we can assemble the phone and test, Tap Display & Brightness and now you should that the True Tone function has been turned on with the switch being green. The True Tone has been restored back.
Conclusion
So like we mentioned before, to ensure your True Tone can work once a screen has been replaced with an aftermarket option, you will need to reprogramme this with a True Tone compatible screen. If you should require screens that are True Tone compatible, then our range of CEVA screens are just that!
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