According to the email, the secret *3370# code is supposed to improve your phone's battery life. So, if you ever find yourself with very low battery and without a charger at hand, simply press the *3370# keys to activate the secret battery reserve.
SECRET CODE 4 all GSM mobiles
These codes only work on specific Nokia phones. They do not work on iPhones, Samsungs, Google Pixels, LGs, or any other iOS and Android devices. If such code did work on all devices, why would cell phone companies keep such functionality a secret?
Remember that scene(Opens in a new window) in War Games when the socially broken code monkeys were explaining to aspiring hacker Matthew Broderick all about "back doors" (i.e. secret pathways planted by programmers)? Well, that's actually a thing.
Coders have a storied tradition of baking in secret passageways (or sometimes, just fun little Easter eggs) that can only be accessed by inputting a special "key." And so that tradition continues in the mobile age.
We would LOVE to provide you with a comprehensive list of the dozens of codes out there, but that would be an exercise in futility. These codes seldom work across different carriers, OSes, or phone models (or even on generations of the same model).
If you really want to try them out, your best bet may be to Google your phone's make and carrier + "USSD" for a tailored, comprehensive list. I attempted a number of codes using an iPhone SE (while trading out numerous carrier SIM cards) in addition to a Galaxy S5 and Galaxy S7 Edge running on AT&T. Some of them worked! Check out the list below for 13 codes that I can confirm worked on at least one device. Good luck and have fun!
Unfortunately, Samsung's secret codes will not always function well. And for most of our using situations, it can not solve the problem. However, Dr.Fone can be the best alternative to the codes. Even if you forgot the password of your Samsung, or just got a second-hand phone from a stranger seller without any credentials, Dr.Fone solves the phone unlocking and Google FRP bypassing problems. Dr.Fone - Screen Unlock (Android) is a good way to remove Samsung's locked screen without a password. It doesn't require any tech skills.
There's actually more to the dialer screen on your OnePlus than meets the eye. Besides its obvious purpose of calling people, there's a vast array of secret codes that you can input to troubleshoot your device, in addition to revealing important information, making anonymous phone calls, and so much more.
OnePlus has coded in numerous secret diagnostic modes that can be accessed from the Phone app's dial pad to aid in production line quality control and after-sales troubleshooting. In addition to these, popular GSM-based carriers like T-Mobile also come with their very own secret codes to better access their services.
The dialer codes below have all been tested on the latest firmware versions for the OnePlus 5T and 6. However, some of the codes provided may only work with specific models, not to mention different wireless providers, so your results will vary depending on what model or carrier you have.
Note that these dialer codes work in various ways. Most OEM-specific dialer codes will be activated automatically once you input the last digit or symbol, while some codes will require you to hit the green "Call" button to activate.
OnePlus recently made headlines as serious security concerns grew around its preservation of a secret diagnostic tool on its devices which could potentially allow hackers to gain root access to its handsets. The company defended its decision to leave the app intact, however, noting that failsafes like USB debugging and the need for ADB commands are enough to prevent any third parties from gaining root access.
Upon inputting the code, you'll be taken to a "FactoryMode" page containing various tests and settings that you can access. Notable options include the ability to instantly enter "FastBoot Mode" without the need to shut down your device, along with the option to instantly wipe all data on your device by hitting "All Clear."
In addition to the test mode listed above, you also have the option of viewing software or hardware versions and other information for individual components and features by inputting the following codes:
Retrieving your handset's IMEI with the help of these dialer codes is way faster than going to "About Phone" page within its settings, or looking for the original packaging that you may have discarded. As such, we recommend memorizing this simple command for those moments where you'll need to quickly retrieve your device's IMEI for troubleshooting or reference purposes.
OnePlus lets you instantly wipe all data and restore your device to factory settings by inputting a variety of dialer codes, depending on how much information you want to preserve. For instance, you can enter *#*#7780#*#* to remove your Google account and all the apps you've installed, along with all data associated with them, but keep all other files like photos and other media files.
Be careful of what code you input however, as *#*#947322243#*#* will instantly reboot your device in preparation for a factory data wipe and reset, as opposed to *#8778# and *#*#7780#*#* that can be easily canceled by hitting the back button.
OnePlus handsets come standard with their very own Weather app which easily ranks among the best apps available today thanks to its gorgeous design and extremely user-friendly interface. Not surprisingly, the app has several dialer codes of its own to help you access and tweak various settings:
If the sheer amount of dialer codes we've highlighted so far weren't dizzying enough for you, OnePlus has a ton of other codes available for testing software and hardware components. Unfortunately, these codes may only be reserved for OnePlus itself, as it's hard to determine their purpose.
Thanks to FCC's mandate requiring all US carriers to give consumers the option of blocking their information from showing up on caller ID screens, you have the freedom to make anonymous phone calls simply by inputting a short code before the recipient's number. Once dialed, your recipient will receive your call as usual, but with your name and/or phone number completely blocked off.
This option is ideal for making your presence known, especially if you're trying to reach an important contact in an emergency or business opportunity, as well as contacting people who are known to block unknown callers. Again, T-Mobile has an alternative code available.
AT&T and T-Mobile both let you instantly check your data usage on your OnePlus device in real-time with the use of dialer codes. To do so, simply enter either *3282# of you're using AT&T, or #932# if you're on T-Mobile.
You have a lot more options for call forwarding, however, if you're on T-Mobile, and can use the following codes for all your forwarding needs. Visit T-Mobile's website if you'd like more details on the codes provided below.
Of course, what's the point of dialing 112 when you can just call 911. Granted, it's not very "secret," but it's the most important number to know in an emergency. As a testament to its importance, this number will work regardless of which carrier you have, and may even save your life in a dire emergency.
Believe it or not, all the service codes we've detailed above are just the tip of the iceberg, as each carrier comes with its own specific set of codes that you can use, in addition to all of the ones we've listed above. Keep in mind that some of these codes are plan-specific, such as T-Mobile's codes for prepaid plans, so your results may may vary.
With the sheer amount of OnePlus codes that we've provided, we wouldn't be surprised if we've overlooked a code or two, or included some that may not work for your OnePlus device. So please, let us know in the comment section below if you've found any other codes or if one of the above codes isn't working for you.
The Android operating system is well known for its hidden features and Easter eggs, like using custom dialer codes to access various hidden apps and settings. Some of these codes are universal, which means you'll get the desired output on any Android device, whether they're a great flagship or a cheap budget phone. However, custom OEM skins (like One UI by Samsung and MIUI by Xiaomi) and carrier-customized models often come with their own set of hidden codes.
The so-called hidden codes are basically part of the Man Machine Interface (MMI) schema. These are a bit different from the Unstructured Supplementary Service Data (USSD) codes, although both of them start with an asterisk (*) followed by digits that consist of commands or data. Groups of digits may be separated by additional asterisks. The message is terminated with a hash symbol (#), but custom MMI codes may end with an asterisk as well.
While USSD codes are used to communicate with the mobile network operator's servers for menu-based information services, mobile-money services, and location-based content services, the MMI Supplementary Service codes work completely offline.
Using this code allows the field test feature to appear so you can see the exact strength of the signal your phone is getting. Knowing this is helpful in deciding whether or not to install a signal boosting system.
This handy code lets you check call forwarding numbers. If your line ever gets too busy, you can assign another number for incoming calls to be directed to. Next, find out the top things that are killing your smartphone battery and how to fix them.
These codes can be broadly classified into two main categories USSD codes and MMI codes. While mostly not very useful to the average smartphone owner, these hidden codes can be used once in a while just to satiate your curiosity. The purpose of this article, therefore, is to create a comprehensive list of these secret codes for Android devices.
While the average user might not even need to know the difference between these two, it is always good to know what the differences are. Both USSD and MMI codes usually begin with an asterisk or a pound symbol/hashtag. These codes are updated regularly as new versions of Android software are released, and some manufacturers have their own additional special codes. 2ff7e9595c
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