There is HIDDEN info in your smartphone! Use these Android secret codes to find out

tech.hindustantimes.com:

If you are a long time smartphone user, you may remember the days when you could type a string of numbers in your dialer screen starting with an asterisk or hashtag to find out your SIM card balance and validity date. But did you know that there exist a host of these codes that can reveal important hidden info about your smartphone device and the carrier you are using. These Android secret codes can be a lifesaver for you, especially if you ever accidentally put a system lock on your device or lose it.

Using these android secret codes is very simple. You just need to go to your dialer screen and enter the codes like you would enter a phone number. To execute the code, simply press the call button. But before we dive deeper into these smartphone codes and help you find out all kinds of hidden info stored inside your phone, you should know about the two types of codes that exist.

The seasoned android users may already know it, but for the rest of you, there are two kinds of android secret codes in your smartphone that you can execute. The first is the Unstructured Supplementary Service Data or USSD codes. These codes are essentially used to know information about your network operator. The second is the Man Machine Interface or MMI codes. The MMI codes are specific to the brand and the model of the smartphone. These codes can reveal a range of hidden info about your device ranging from International Mobile Equipment Identity or IMEI number to hidden menus that engineers use to repair your device. Using these codes, you may learn to access parts of your smartphone previously unknown to you.

These codes are generally universal and will function on all android smartphones. There, however, may be some carrier restrictions on some