Are you aware that the iPhone possesses hidden codes that can perform various functions? Each smartphone model is equipped with unique secret codes provided by its manufacturer. However, it can often be challenging to keep track of all these codes and their applications. This article aims to present some of the most useful secret codes for the iPhone.
Essential Hidden iPhone Secret Codes
To access information regarding the device, manage call masking, troubleshoot problems, and more, you need to input these secret codes into the dialer.
1. Field Test Mode
*3001#12345#*If you seek a code that provides technical information regarding your
network, this specific code is essential. This secret code for iPhone
enables you to determine the precise signal strength of your network
measured in decibels.
1. First, ensure that your iPhone is connected to an active cellular
network.
2. Then, launch the phone application and input the code in the dialer.
3. In the Field Test menu, select the LTE option.
4. On the subsequent screen, choose Serving Cell Meas.
5. Finally, examine the numerical value displayed next to rsrp0.
The figures next to rsrp0 represent your iPhone's cellular signal
strength in dBm.
For those who may not be aware, if the values next to rsrp0 range from
-50dB to -60dB, the signal strength is considered excellent. A range of
-70dB to -90dB indicates good signal strength, while values exceeding
-100dB signify poor signal quality. 2. Enter Field Test Mode in iOS 10 or Earlier
*3001#12345#*If your iPhone operates on iOS 10 or an earlier version, a different
procedure is required to access Field Test Mode. For iOS 10, you should
launch the dialer on your iPhone, input the designated code, and then
press the call button.
This action will redirect you to the Field Test page, where you can
obtain details regarding your network. To assess the signal strength,
press and hold the Power button until the "Slide to Power Off" option is
displayed.
When this option appears, instead of sliding, press and hold the Home
button. You will then be able to view the network strength in decibels
on the status bar of your iPhone.3. Hide Your Caller ID
*31#mobile numberIt is possible that you have received numerous calls on your iPhone from
numbers that display no caller ID or an unknown identity. Have you ever
considered how this occurs? A limited number of carriers offer the
option to conceal caller ID, enabling users to place anonymous calls.
Additionally, you can conceal your caller ID using the code provided,
provided that your carrier supports this feature. We have also included
codes for various countries; simply enter the code on the dialer
followed by the number you wish to call. 4. Check cellular data usage
Should you depend on your telecommunications provider for cellular data, you may utilize the supported USSD codes to ascertain your data consumption. The specific codes to be dialed will vary based on your carrier.
Verizon: #3282
T-Mobile: #932#
AT&T: *3282#
For those with a postpaid plan, the USSD code *646# can be employed to verify the remaining cellular data usage.
5. Check the SMS Center
*#5005*7672#When you send an SMS from your mobile device, it is directed to the
server or SMS center number. You can obtain that SMS Center number using
the provided code.
To find the SMS Center number on your iPhone, access the dialer, input
the specified code, and then press the call button. 6. Check the Call Waiting Status
*#43# To determine if your iPhone has call waiting activated or deactivated, it is necessary to utilize this secret code.
Access the iPhone's dialer, enter the code, and then press the Call button. This will allow you to verify the status of call waiting on your device.
7. Enable/Disable Call Waiting
*43# (Enable)
#43# (Disable)Upon reviewing the Call waiting status, you may choose to enable or
disable this feature according to your preferences. To activate Call
waiting on your iPhone, please enter *43# in the dialer.
If you prefer to deactivate Call waiting, simply access the dialer,
input #43#, and press the Call button. This action will effectively
disable the Call waiting feature.8. Verify Call Barring Status
*#33#
If you are experiencing issues with receiving calls on your iPhone, it is essential to verify the Call Barring Status. This feature is designed to restrict both incoming and outgoing calls. When Call Barring is activated, your iPhone will be unable to receive calls, regardless of the strength of your network connection. To check the Call Barring status on your iPhone, access the dialer, enter the provided code, and press the Call button.
9. Activating or Deactivating Call Barring on iPhone
*33*pin# (Activate)
#33*pin# (Deactivate)
You have the option to activate Call Barring on your iPhone, particularly useful when you are on vacation and wish to avoid incoming calls. To activate this feature, input *33*pin# (substituting ‘pin’ with your SIM PIN) and then press the call button.
To deactivate Call Barring,
simply enter #33*your SIM pin# and press the call button.
10. Verify Call Forwarding Status
*#21#
Call forwarding allows you to redirect incoming calls to a different number, which can be beneficial for minimizing interruptions.
To check the current status of Call Forwarding, enter the provided secret code into your iPhone’s dialer and press the call button. This will reveal the status of your Call Forwarding settings.
11. Redirect Calls to Another Number
*
21phonenumber#
This code is part of the Call Forwarding USSD commands. To redirect your calls to a different number, access your iPhone’s dialer, input *21phonenumber#, and press the call button.
Ensure to replace ‘phonenumber’ with the desired number to which you wish to redirect your calls.
12. Activate or Deactivate Call Forwarding
*21#
To toggle the Call Forwarding feature, open the dialer, enter *21#, and press the call button.
If Call Forwarding is currently disabled, this code will activate it; conversely, if it is already enabled, the code will deactivate it.
13. Verify Call Line Presentation
*#30#
Call Line Presentation is a service that reveals the caller’s phone number when you receive an incoming call on your iPhone.
If this feature is turned off, the caller's number will not be displayed. You can verify its status by using the code provided.
14. Display Your Mobile Number on Caller ID
*82(number you are calling)
If your mobile number is completely blocked from being displayed, you can use this code before the number you are dialing to ensure your number appears on the caller ID.
Thus, if your contacts are unable to see your number on their screens, utilizing this code will allow them to view it.
