Introduction
The iPhone has various useful functions and apps. However, several settings and functionality are hidden and can only be accessible with secret USSD codes.
You must call these iPhone secret codes using the phone app, and a new window will appear to provide the desired setting or information.
Some iPhone secret codes can be used to verify the SIM lock status of your iPhone, display the battery cycle count, and perform other functions.
You are most likely familiar with some of these iPhone secret codes, but let’s look into what you know below.
14 iPhone Secret Codes You Must Know In 2024
1. Show the IMEI number on iPhone (*#06#)
I understand this code for checking the IMEI number is the same on all devices; this might not be new.
The IMEI number is a unique collection of digits provided to each phone. It is handy when tracing a phone, notably when an iPhone is missing.
The USSD code for checking the iPhone IMEI number is essential when you don’t have the original box and want to trace the iPhone or trade it in for a new model.
Dial *#06# in the Phone app to display the IMEI number.
2. Check the battery cycle count in the iPhone (*#0228#)
The iPhone battery depletes over time, as do other battery-powered gadgets. The battery cycle count shows the number of times an iPhone battery has been fully charged and drained.
Dial *#0228# and press the Call button. To extend the battery life of an iPhone, limit its charging capability to 80 percent.
3. Run the Diagnostics Test (#0#)
Are you concerned about hardware issues in your iPhone? A single USSD code provides a complete overview of every component, including the display, sensors, and everything else.
Dial #0# in the Phone app and wait for the test to finish. If the test identifies any components, get them fixed.
4. Check Missed Calls on iPhone (#61#)
If your iPhone does not have network connectivity or has been turned off for an extended period, you can check for missed calls using the #61# code.
Dial the code, and you will see a list of all the phone numbers that attempted to contact you.
5. Check the SIM lock status on the iPhone (#mobilenumber#)
The iPhone comes in two SIM configurations: locked and unlocked. The primary distinction is that you cannot swap the SIM card in a closed configuration.
If you purchased an iPhone and wish to verify the SIM lock status, enter #yourphonenumber# and hit the call button.
6. Download the Carrier Settings Update (#UPDATE#)
The carrier settings, which include network and configuration information, must be updated regularly. This iPhone secret code does not have any numbers.
Type #UPDATE# and press the call button to download and install your phone’s most recent carrier settings.
7. Check iPhone Network Signal with Field Test Mode (3001#12345#)
If you are experiencing call dropouts on your iPhone, utilise the Field Test Mode to evaluate the network signal strength and other associated characteristics. Dial 3001#12345# to view the decibel output.
An excellent signal is between -50 and -60 dB, whereas an average signal is between -70 dB and -90 dB. Your iPhone has a bad network connection if the reading exceeds -100dB.
8. Check the Voicemail Status (#50057672#)
Dial #50057672# USSD code to check if you have activated voicemail.
It will indicate the current state of the voicemail, the assigned phone number, and any issues that occurred when saving the voicemail.
9. Override iPhone region locks (*#0049#)
iPhones have a regional lock, which makes it challenging to use SIM cards from another carrier in a different country. However, the *#0049# USSD code allows you to overcome the iPhone’s regional lock. Dial it, then use any SIM card.
10. Forwarding Calls in iPhone (*21(number)#)
Call forwarding relays the call to another designated number if you are unavailable. Dial *#21# to see if call forwarding is active.
To add a number to call forwarding, enter *21(number)# and hit the Call button.
11. Reset iPhone network settings (##001127#)
If you cannot call someone from your iPhone, there may be an issue with your network settings.
So, you can use the ##001127# code to reset the iPhone’s network settings and force it to download them again.
12. Check the Call Waiting Status on iPhone (*#43#)
Call waiting alerts you when another person attempts to call you while speaking with someone. Dial *#43# to see if the call waiting feature is active.
To enable call waiting, dial *43# and then hit the call button. To disable call waiting on the iPhone, use the code #43#.
13. Check Cellular Data Usage (500561412#)
Do you want to see how much data you’ve used when viewing videos and browsing the web on your iPhone? Dial 500561412# to check your daily and total data use.
Installing third-party or carrier apps to check your data limit and consumption is unnecessary.
14. Soft reset iPhone (*#7780#)
If your iPhone freezes and apps fail randomly, accessing and resetting the iPhone settings isn’t easy.
Instead, execute a soft reset using the *#7780# code. This code will reset the app data and phone settings, resolving the app startup issue.
Conclusion
With the iPhone mentioned above secret codes, iOS users can now be their mobile engineer firsthand without contacting anyone because issues are meant to be solved by merely dialing any of the listed codes.
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