There is no doubt that the Xiaomi layer is one of the most advanced options that exist in mobile phones and in which we can make countless decisions about the operation of our mobile just by knowing the steps. Among these possibilities, one of the ones that makes the most changes in our terminal is the optimization of MIUI , an option designed for developers, but which we can take advantage of.
This new feature that was integrated with MIUI 12 has gained some popularity due to how fast it is to get it up and running and what it can achieve in Xiaomi smartphones. The large number of errors in the Chinese layer led many to discover this utility to solve their problems. Although, on the contrary, other different errors may appear that we are going to explain to you.

What does this option do
As its name suggests, this MIUI tool is a possibility integrated into the mobile phones of the Chinese firm to improve their performance. This tool will give us a series of variations when activated and it will take away other possibilities with the intention of improving the power of the phone.
To be more clear about what the changes to this option consist of, first we will see what we will gain by having this software tool of the Xiaomi customization layer active. Although, later we will see if it is really worth it or not to have it enabled on our phones.

What we win
In most Xiaomi phones, we will find this improvement within its ‘hidden’ settings. In this way, we will be able to enjoy a series of positive points:
- Fewer errors when opening applications.
- It will load slower apps but with less lag.
- No notification problems.
- Access to all advanced options for mobile.
- Greater security and stability when connecting to Wi-Fi or mobile networks.
However, having it enabled, we can suffer different problems, such as the case that the smartphone battery will be consumed before it should. Well, for its proper functioning, it needs a good amount of energy.
How to activate it
We are facing one of those software tools that are hidden inside mobile phones. In this case, within the ‘secret’ configuration of MIUI and its developer options. Therefore, we must follow a series of steps so that the terminal shows us the option to activate this software for the customization layer of Chinese mobiles:

- Enter the Settings of your Xiaomi mobile .
- Then, scroll down to the Additional settings section and enter this section.
- Then go to the last option, the one that says ‘Developer options’. If it does not appear, you must enable this function from Settings> About the phone> repeatedly press on MIUI version until the developer options are enabled. In addition, your phone will tell you how many times it has left to activate.
- When they are activated, we will enter them and go down to the option where it says ‘ Activate MIUI optimization ‘.
- Finally, you just have to click on the switch to enable this function.
However, this functionality of Xiaomi’s software layer is enabled by default on their smartphones. However, users have reported that after updating to version 12 of this layer they have lost this functionality, or it has been disabled by itself. So, by following these steps, you will be able to see whether or not you have this function activated on your mobile.
What happens if you deactivate it
Before we can give way to deactivating said tool from the system, we have to start by activating the options for developers in Xiaomi if we have not done it before. This will give us a new access to the smartphone, regardless of whether it is a high-end or an inexpensive smartphone with this layer of Chinese customization.

- To begin we enter the Settings.
- Later it reflected in ‘On the telephone’.
- We repeatedly touch on the section called MIUI version.
- Once the developer options activated message appears, we can continue.
Once this is completed, we will have to enter the developer options found within Settings> Additional settings> Developer options. Scrolling to the end of all the options we will come across this tool to activate or deactivate the MIUI Optimization . We can also use the search bar to locate the option instantly.
As we have seen, some changes do allow us to improve aspects of the system just by deactivating this option, but others can lead us to find various errors depending on the version of MIUI we have, the security patch and also the smartphone. So that you do not get any surprise, we explain and show you the errors that users have found and which have been recorded in the Xiaomi forums, as well as on social networks.
The mobile can get hotter

Some users have found that disabling the processor tends to get hotter than it shouldn’t, which shouldn’t cause any problems right away, although it could affect components in the long run. This is because the system stops limiting processes and demands maximum performance from the processor at all times.
Changes in system themes

Also when we deactivate this from the system, the part that stores the themes is reset, which causes our smartphone to return to the original configuration on some mobiles. If we do not want to lose our customization of the system, icons and backgrounds, it will be better not to deactivate the optimization because it is a problem that we will not be able to solve in any other way than by re-personalizing the system with the themes.
The apps will ask for permissions again

This is another of the great affected by changing this option in the developer settings, asking us again for all permissions in each of the apps we use and stopping working until we do. This occurs because the system is reset, affecting the permissions directly even if it does not erase the internal memory, photos or videos.
Is it better to turn it on or off?
However, if we follow the steps that we know to deactivate the system improvement, the phone will suffer variations like the ones we have explained previously. Although, there may also be some that would be exclusive to your smartphone due to a specific problem:
- Some notifications may not arrive.
- You will not be able to use some advanced options.
- Other possible system and application problems.
Now that we know all the failures that it can cause and the points that we would earn, putting everything that this could cause us on the scale, we realize that, on very few occasions, it will be better to deactivate the optimization of your Chinese mobile. Only in those cases in which we have a serious problem with MIUI and taking into account all the negative effects that the change could produce on the system, this option would be recommended.

For all other users in an extended way, the MIUI improvement is the ideal option that we can have activated, applying general corrections throughout the system and solving problems that in the past have been general in all smartphones. In addition, taking into account that not all smartphones include this function, it would not be surprising that sooner or later the option disappears from Xiaomi as it has already happened with previous adjustments that ended up hurting more than solving errors.
Because it does not show up?
It is possible that some Xiaomi phones, especially Redmi smartphones, do not have this tool available, as it is due to a limitation of the personalization layer.
With the intention that users cannot modify it, the tool is removed on some devices with this software layer, although, however, it could also be due to the system version. More than anything, because there have been many users who have reported that with the passage of updates this setting has disappeared from their phones.
Although, with the arrival of the update to MIUI 12.5 and later versions, this option could reach our mobile so that we use it according to our needs.
