What happens when you dial * 3001 12345 #* on an iPhone?

Dial *3001#12345#* and press the Call button. This will launch the Field Test Mode app and where the bars/dots were in the top left corner of the screen, you'll now see a negative number. The negative number is the decibel signal strength

signal strength

In telecommunications, particularly in radio frequency engineering, signal strength refers to the transmitter power output as received by a reference antenna at a distance from the transmitting antenna. High-powered transmissions, such as those used in broadcasting, are expressed in dB-millivolts per metre (dBmV/m).

https://en.wikipedia.org › wiki › Signal_strength_in_telecomm...

Signal strength in telecommunications - Wikipedia

reading and should be followed by the carrier name and then the network type.

What is * 3001 12345 #* on iPhone?

Accessing Field Test Mode on an iPhone can be quite straightforward: simply go to your phone's dialer, type in *3001#12345#* and hit the dial button. Unfortunately, though, you often can't get reliable signal strength (RSRP) or signal quality (SINR) readings on iPhones.

What does * 3370 do on iPhone?

For iPhone users, it turns out there's a little-known code that may help boost your cell reception: *3370#, followed by tapping the "call" button. "If you ever find yourself somewhere getting poor cellphone reception, type in this code to turn on 'enhanced full rate' mode," writes Jayna Taylor-Smith on Reader's Digest.

What does dialing *# 31 do?

Hide Your Phone From Caller ID: #31#

I could only get this to work on Android. But entering this code prompted a pop-up stating that my Caller ID had been disabled. In order to re-instate Caller ID, enter *31# .

What does *# 30 do?

#2 NUMBER IDENTIFICATION: The code *#30# will help you turn your number identification on or off.

*3001#12345#* trick

What is *# 9900?

*#9900# Opens up system dump mode.

What does *# 0 *# do?

Accessing the Secret Diagnostic Menu

To get the ball rolling, simply open your Samsung's phone app. From there, enter *#0*# using the dial pad, and the phone will immediately go into its secret diagnostic mode. Note that the process is automatic, so there's no need to tap on the green call button to enter the command.

What does dialing * 002 * do?

##002# - If your voice call or data call, or SMS call has been forwarded, dialling this USSD code will erase them. *#21# - By dialling this USSD code, you would get to know if your calls have been diverted somewhere else or not.

What happens when you dial * 004 * number?

Call “##004#”

This number is an internationally recognised code. No one will answer when you call it, but it will turn off conditional forwarding on your phone. It will reset your phone to its default phone settings.

What does *# 9090 do?

*#9090# – Diagnostic configuration. *2767*3855# – Format device to factory state (will delete everything on phone) *#*#232339#*#* – Wireless LAN tests.

What does * 82 mean on a cell phone?

*82 - Unblocks Caller ID on one outbound call

This star code will unblock your caller ID for a single outgoing call if you have previously used *61 to block caller ID for all outbound calls.

What does * 97 do on a phone?

The next time you receive a call from a number you wish to block, end the call and dial *97. The number will automatically be added to your Selective Call Rejection list. You can block up to 100 numbers.

What does * 52 mean on a cell phone?

When calling a Mexican mobile phone or landline from the U.S. or Canada you must enter the "+" sign when using a mobile phone, then the country code for Mexico, which is 52, and then the 10-digit phone number including area code. Dialing from a mobile phone: +52 xx xxxx-xxxx.

Is there a hidden mode on iPhone?

You can use Private Browsing Mode to open private tabs, which don't appear in History on iPhone or in the list of tabs on your other devices. in the center of the tab bar at the bottom of the screen, then tap Private.

What is the code to see if your iPhone is tapped?

Code to check all call forwarding information: *#004# Code to check if phone is tapped: *#21#

What are the secret phone codes?

What does * 77 do on your phone?

Reject anonymous calls

Anonymous Call Rejection (*77) stops calls from people that use a blocking feature to keep their name or number from being displayed. When Anonymous Call Rejection is turned on, callers will hear a message telling them to hang up, turn off the blocking feature, and call again.

What is this code * 61 *?

Dial *#61# to request status of call diversion on your number when you are not responding. Dial *#67# to request status of call diversion on your number when your line is busy. Dial *#62# to request status of call diversion on your number when your handset is turned off or has not coverage.

What does * 62 * do?

Selective Call Forwarding

Forward calls from certain numbers to another number (such as your cell phone) when you are away from your phone. If the number is not on your selective call forwarding list, your home phone will ring as usual. To activate, dial *62.

What is * 73 on a cell phone?

Call forwarding is disabled by dialing *73. This feature requires a subscription from the telephone company. Also available in some areas is Remote Access to call forwarding, which permit the control over call forwarding from telephones other than the subscriber's telephone.

What is * 57 For in calling?

Malicious caller identification, introduced in 1992 as Call Trace, is activated by Vertical service code Star codes *57, and is an upcharge fee subscription service offered by telephone company providers which, when dialed immediately after a malicious call, records meta-data for police follow-up.

What does * 78 do on your phone?

When you do not want to be disturbed by incoming calls, you can activate the “Do Not Disturb” feature. All calls will be directed to Voice Mail and you will not hear your phone ring. To activate Do Not Disturb, dial *78.

What is *# 06 used for?

Android & iPhone code: *#06#

Entering this into your keypad shows your display IMEI number, which is your phone's identification number, and it's unique to each smartphone.

Does *# 21 tell you if your phone is tapped?

We rate the claim that dialing *#21# on an iPhone or Android device reveals if a phone has been tapped FALSE because it is not supported by our research.

What is the secret code for I Love You?

2. 143: I Love You. This one is easy. I (1) Love (4) You (3).