Even if you never take it out of your hands, your mobile phone conceals multiple secrets that you didn’t know existed. Indeed, very few users are aware of the famous hidden codes that allow activating certain functions or revealing a secret menu. And for good reason, these codes are mainly used by software developers or by the maintenance team which repairs possible breakdowns. However, if you have in-depth knowledge in the field, nothing prevents you from having access to some of these codes to better familiarize yourself with your device.
With the help of your mobile device, you can unlock completely unknown hidden functions and enjoy some very interesting expert tips. Find out, for example, what the secret code #0* is for on your mobile phone.
Mobile phone keypad – Source: spm
What are these secret codes in the cell phone?
The USSD protocol of the mobile device you are using can allow you to access many hidden functions, which you did not even know existed. However, by dialing certain codes, you could learn more about your Smartphone and benefit from certain clever shortcuts that can make your life easier.
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To save time, surely you already know that programmers are very fond of certain secret paths in electronic devices, unknown to users. Except that they are only accessible by entering a special code. It’s all related to the USSD protocol, that is, additional unstructured service data called “quick codes”. Note that secondary channels essentially allow users to communicate directly with the service provider’s computers and/or to access the main functions of their device.
All of these codes are accessed by entering them into the dialer: the dialer is the screen you use to enter a phone number you want to call. These secret codes usually begin and end with the * or # keys. Between these symbols, there is a sequence of very specific numbers that you should never accidentally type.
What is code #0* used for on the Smartphone?
Be careful, some secret codes can cause you problems if you don’t know how to handle them correctly. In particular, you risk resetting your device or losing all your personal data. Therefore, if you do not have extensive experience in the field, do not venture to use any code. In order to know in detail how some secret codes work, it would be wiser to seek the help of programmers to decipher them correctly.
Fortunately, some codes are more harmless than others. You could have fun testing some of them to enrich your user experience and discover interesting features. So you might be surprised to see what your cell phone hides when you type certain symbols. For example, if you dial the code *#0*# on your Smartphone, you will have the opportunity to have more precise information on the status of your device’s screen and on the operation of the loudspeakers. All you need to do is compose the code and follow the guidelines to test this feature.
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Mobile phone error message – Source: spm
Other codes to discover
To satisfy your curiosity, here is a range of secret codes that will allow you to test certain components of your mobile phone or tablet.
- ***#2664#*#*: This code performs a touch screen test.
- *#0283#: it tests the device’s microphone and allows you to make Microphone/Speaker loops.
- *#0228#: This code displays current battery status and statistics.
- *#0782#: it indicates the date and time configured on the device.*#0673#: this code tests the sound part (MP3) of your mobile.
- *#0011#: it displays the basic information of the GSM phone.
- #4777*8665#: This code tests the GPRS and device configuration menus.
Note that these are diagnostic tools to be able to identify certain failures. These commands are often very useful for employees of mobile phone services.
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Via SPM