I recently received a mobile phone with secret codes. While I like to play with it, I also found an interesting secret code that can enable / disable a lot of secret settings on the mobile phone. These codes can also reveal a lot of useful information about the phone. Use for most Android phones.
Brands: Samsung, Sony, LG, HTC, Oppo, Motorola, Lenovo, Xiaomi, Apple, Generic and ….

*** Easy to use, you can touch “Copy” and then paste to call.

*** Importance! Some manufacturers do not allow the use of these codes and they may not work on your device. You can change the settings of some of your devices using the secret code. Use at your own risk! ***

Disclaimer: This information is for experienced users. This is not for primary users, hackers, or mobile device thieves. If you are not used to using cell phones, please do not try any of the following methods. We shall not be responsible for the use or misuse of this information, including loss of data or damage to devices. Use it at your own risk.

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Watch this video Youtube link

Examples of some secret codes:

Samsung
* # 06 # – Display the IMEI number
* # 0 * # – General test format

Sony
* # * # 7378423 # * # * – service test – pressure sensor
* 2767 * 3855 # – Factory reset your Xperia Z.

LG
3845 # * XXXX # – secret menu code for new LGs. Enter the numbers in the phone names instead of XXXX. (Example: P920: 3845 # * 920 # E730: 3845 # * 730 #)
2945 # * # – Encrypted menu (data, test, factory reset …) works on most LG phones without a SIM card.

HTC
* # * # 3424 # * # * – HTC Function Test Program.
* # * # 4636 # * # * – HTC info menu

Oppo
# 800 # – Enter the engineering mode
* # 801 # – Engineering Switch Test Format (Dangerous)

Apple, city, cat
* 3001 # 12345 # * – dial. Enter the field format. The field format shows many of your iPhone’s internal settings, especially the most recent network and cell information.
* # 06 # – Your IMEI. No need to call. IMEI is a unique identifier for your cell phone’s hardware. In addition to your SIM card information, it also identifies you in the provider’s network.

Normal – Android phone
* # * # 4636 # * # * – Show phone, battery and usage statistics
* # * # 0 * # * # * – Test the LCD screen

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Easy to use, touch “Copy” and then disconnect.

Use secret codes at your own risk!
Note: We are not responsible for any damage to your phone, nor are we responsible for any damage.