1. iPhone Field Test Mode Code
Shortcode: *3001#12345#*
The Field test mode code is actually used for determining the exact network signal strength in Decibels.
You all know the 5 black dots/bars in the upper left corner of your iPhone screen deliberately telling us the signal strength. The more bars simply means the more signals.
Dial *3001#12345#* for the “Field Test Mode setting” for the iPhone and it will unlock all the iPhone Secret Menu and hidden features on your iOS device.
After entering the field test mode code *3001#12345#* on your iPhone’s dialer and hitting the call button, you’ll enter in the field test mode page, where you will find various network details.
After entering in the field test mode just:
Wait for a few seconds to settle down the network and then note down your signal strength.
To disable the decibels and get back the usual network bars on your iPhone, again, dial the secret code and tap on the top-left edge, which says “Phone” or you can simply press the home button once.
Qualcomm Chipsets and Intel Chipsets Behavior
The above Field Test Mode Code works with two chipset (Qualcomm and Intel) and covers the iPhone 6 through iPhone 11 Pro Max as well as Verizon Wireless, Sprint, AT&T and T-Mobile.
Let’s briefly understand the Field Test Mode Setting on your iPhone.
All the iPhones come up with the following two chipsets and these are:
Qualcomm chipsets: generally used for Verizon Wireless and Sprint Mobiles
Intel Chipsets: used for AT&T and T-Mobile
Which chipset your phone has will decide which menu you’ll receive in Field Test Mode.
So, which chipset your phone is using? Either it is a Qualcomm, Intel or other Japanese or international locations, the below table will tell you everything:
[table id=3 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]The other iPhone models which are not present in the above table, their chipset and model no. information can be found on their phones.
So, you have to look up the Part Number of your iPhone
Go to Settings >> General >> About
There you can clearly see the Part Number is listed there.
Actually, the Part Number corresponds to the Model Number for the iPhone you are using.
If you are still unable to find your model number then visit the Apple website to identify your iPhone model.
Once, you find your model number from the above list you’ll be able to determine it is a Qualcomm or Intel chipset then you know which menu you will receive when you go into “Field Test Mode”.
As I said earlier that Qualcomm is used for Verizon and Sprint while Intel is used for AT&T and T-Mobile.
iPhone Field Test Mode with Qualcomm Chipset
If you have the Qualcomm chipset simply:
Go into your phone and dial 3001#12345# and tap on the call button on the screen.
You’ll enter the “field test menu.”
Click on 1xEV-DO and the decibel measure number you are looking for is Rx AGC0.
You’ll see negative numbers there so the closer you get to zero means the larger number is the better signal.
In AGC0, the measurement:
iPhone Field Test Mode with Intel Chipset
The field test mode code is also the same for Intel Chipsets.
Just enter *3001#12345#* and hit the call button, you’ll enter in the field test menu.
You will see a bit different menu this time.
Well, Tap on the LTE and go to the Serving Cell Meas. Here we will discuss rsrp0
The decibel signal strength works similar but has a little bit different range.
Where the symbol > represents the greater than and < represents the less than
Once you have noted down the signal strength in decibels, press the Home Button and you’ll exit from the field test menu.
2. IMEI Number
Shortcode: *#06#
Maybe, you know about this code. Didn’t you? For people unfamiliar with this code, all smartphones comes up with a hardcoded unique identification number that is called a serial number.
Just dial *#06# USSD code from your iPhone and it will show you the serial number and MEID Number of your phone.
3. Hide Caller ID
All Carriers: *67Mobile_Number (the code is valid for the United States)
T-Mobile (Alternative): #31# Mobile_Number
If you have a carrier unlocked iPhone or a carrier that supports “hiding your caller ID”, then you can use this Hide Caller ID secret code to hide your identity/number when calling.
Your ID will be shown as “Unknown” or “No Caller ID” or a “Private Number”
Just write the USSD code along with the mobile number you are calling to and tap the call button. It will temporarily deactivate the Caller ID. On the other side, the call will be anonymous and will show “Private Number”, because it is blocked.
The above USSD code temporarily works while calling businesses and individuals. However, your number can not be blocked while calling on a toll-free number or emergency services.
If you want to hide your identity permanently, just call your cellphone carrier and ask for a line block. Once your request is approved, your phone number will never appear, no matter who you call.
The code to call your mobile carrier can vary, but customer service in the United States can usually be reached by calling 611.
Here is a list of the codes that work in different countries:
[table id=2 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]4. Show Caller ID
All Carriers: 2 Mobile_Number
T-Mobile (Alternative): *31#XXXXXXXXXX
If you temporarily want to display your mobile number from a private number, you can dial *82 before dialing the number you’re calling.
You can also tune your iPhone Settings to hide and show caller ID.
This feature is not available with all mobile carrier, but it is for most
Show/Hide Your Number from iPhone‘s Inner Settings
5. Check SMS center
Shortcode: *#5005*7672#
All the text messages (SMS or MMS, not iMessages) sent from your iPhones, first go to your carrier server which is commonly known as “Short Message Service Center” (SMSC). The SMSC Center has a directory of all numbers with their carriers and acts like a postman. After receiving a text message from you, it then sends it to your desired destination number.
If you are facing some issues regarding SMS that they are not reaching at the desired destination then it’s the best way to check the SMSC center number.
To reset the SMS center number dial *#5005*7672# secret code on your iPhone and tap the green call button. This is helpful when troubleshooting failed outgoing text messages with your carrier.
6. Enable Test Emergency Alerts
Shortcode: *5005*25371#
Test emergency alert only works with a wireless plan or on a SIM Card issued by the carrier in the United States. These alerts help you to prepare for any future real emergency strikes.
By default the emergency test alerts are turned off, so, you have to manually activate it through the “iPhone Dialer”.
Just dial the “secret hidden code *5005*25371#” from your phone and hit the call button, you’ll hear a loud alarm. So don’t get confused it’s just a test. Whenever there is any real emergency strike by the government happens, you will get the same alert.
Disable Test Emergency Alerts
Shortcode: *5005*25370#
You can easily disable test alerts by dialing the access code *5005*25370# and you will no longer receive any emergency alerts in the future.
7. Call Directory Assistant
Hidden Code: 411 (Paid)
All carriers have their own directory assistance service with a live operator to help you out for various purposes. Just dial 411 from your iPhone and get updated (receive directory listing via text message) by the live operator about someone’s phone number, address, what business they do.
You can also get information for the latest movies showtimes, driving directions, nearby car repair, the best tailors, doctors and mechanics and more.
Most of the carriers allows three requests per call while AT & T only allows two. The 411 service is not free at all. You will be charged $1.99 for each call to 411.
We will suggest you do not waste your hard-earned money by calling 411 operator, instead make a live search on Google, maps, and Safari for the latest and updated information regarding this purpose.
For more information about 411 and the cost associated with each carrier visit the support pages for:
8. Call Customer Service
Shortcode: 611
*611 on Verizon Wireless
Calling customer service by dialing 611 in the United States doesn’t cost a penny. It’s totally free and connects you with the wireless customer service.
Visit each carrier to know in which hours you can talk to their customer service person
.
9. Get Local Traffic Information
All Carriers: 511
Do you like traveling?
You might be interested in some local places in your city and their road traffic condition in the United States?
You usually use Google Maps, SigAlert, or Waze for this purpose. But If you are not getting the precise local traffic information with these resources then dial 511 from your iPhone and get accurate, precise and exact local traffic conditions and make your journey more peaceful and more pleasant.
Note*: Sprint 511 does NOT work in Alabama, Arkansas, Alaska, Connecticut, Delaware, Montana, Michigan, Oklahoma, North Dakota.
10. How Much Data You have Consumed So Far
AT&T: *3282#
T-Mobile: #932#
Verizon: #3282
Get rid of installing carrier’s apps to know how much data you have used and how much data left in your selected plan. Just dial the above stated hidden codes to check the complete data usage statistics.
By dialing any of the above secret codes on your phone w.r.t. your carrier, you will receive a robotic voice answer or a text message that states your total data usage for the current plan during the month.
This service is not available at Sprint now, in the old days, you have to send a text message to 1311 to get updated data usage stats.
11. Give Yourself a Unique Name to Call
StarStarMe Service (Paid): **me, or **63
StarStarMe is an add-on Service on a monthly subscription from your carrier. The service will give you a unique name instead of your number. Just dial **me, or **63, from your iPhone and subscribe to the service.
Now, pick a unique nickname instead of an actual phone number.
For example to set Hanna as nickname, dial **HANNA (**1234567), now your friends and family can call you using this number instead of dialing 10 digit number.
12. EFR Mode of iPhone:
Dial: *3370#
EFR stands for Enhanced Full Rate and allows superior network quality.
If you want to enable EFR mode of iPhone, then dial the secret code *3370#. You will receive better voice/data quality on your iPhone.
The EFR mode consumes the same battery as it consumes normally. So why wouldn’t you dial EFR secret code to activate EFR mode on your iPhone?
13. iPhone Touch Screen Test Code
Unfortunately, there is no “iPhone touch screen test code” But
All you need to do is to test the iPhone Touch Screen manually by turning on 3D or Haptic Touch.
Here’s how you can test touch screen of your iPhone manually by turning on 3D or Haptic Touch sensitivity:
iPhones that have Haptic Touch:
iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, and iPhone XR
iPhones that have 3D Touch:
iPhone 6s, iPhone 6s Plus, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, and iPhone XS Max
14. iPhone Age Check Code – How old is my iPhone
Unfortunately, Apple hasn’t yet given the iPhone age check code
So you have to check the age of your iPhone manually.
It is helpful when you are trying to buy a used iPhone or selling your smartphones.
Wait a few seconds, you will see the accurate iPhone age at the result page.
15. Install Test M App for Various iPhone Diagnostic Test
If you are going to buy or purchased a new or old iPhone and want to know either your device hardware is perfect for proper use or not then install the free Test M app that can run diagnostics to your iPhone regarding touch screen, sound, camera, sensors, network connectivity, and other hardware.
The app also suggests the find a repair option inside it. The whole iPhone diagnostic test will take your 4 minutes approximately and will prepare a result for issues if there are any.
Once you have installed the Test M app, open it, follow the onscreen procedure and tap on begin to enter the iPhone diagnostic mode. you can also select various tests from the iPhone diagnostics menu app, “Test M”.
It can perform the following iPhone diagnostic tests for you.
Just download the app and do all the iPhone diagnostic tests for free.
16. Call Forwarding – Sprint – Verizon Wireless – T-Mobile and AT & T Mobile
You can forward your phone calls to another phone number, in case you are busy and cannot attend calls immediately.
The Sprint, T-Mobile, and Verizon Wireless has its own way of handling call forwarding. However, these hidden codes for call forwarding can be used for your incoming voice calls to forward on another phone number of your own choice.
Call Forwarding Codes – Sprint (Mobile Device)
[table id=4 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]For more information about call forwarding visit Sprint website
Call Forwarding Codes Verizon (Mobile Device)
[table id=5 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]Call Forwarding Codes T-Mobile (Mobile Device)
[table id=1 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]For more information about call forwarding visit T-Mobile Website
Call Forwarding Codes AT & T
There are no call forwarding codes for AT&T Mobiles.
17. Some Additional Useful Best iPhone Dialer Codes List
[table id=6 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]Note:* We are not responsible for any kind of damage to your device. However, all iPhone secret codes from the list are randomly tested and are working for us. There are also some sensitive codes that can harm the stability of your phone, so, use them wisely.
18. Call Emergency Services
By Dialing the secret code 122 in the United States, All USA GSM-Based iPhones issued from AT&T and T-Mobile can be Redirected to 911 Emergency Service.
[table id=8 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]19. Some Important AT & T Secret Dialer Codes for iPhone
[table id=9 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]20. Verizon Wireless Secret Codes
[table id=10 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]21. Some Important Sprint Secret Dialer Codes for iPhone
[table id=11 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]22. Some Important T-Mobile Secret Dialer Codes for iPhone
T-Mobile Codes Accounts and Mobile Device Information
[table id=12 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]T-Mobile Code for Scam ID & Scam Block Codes
[table id=13 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]T-Mobile Codes Calls Services Hidden Codes (Besides Call Forwarding)
[table id=14 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]T-Mobile Pay In Advance Hidden Trick (Prepaid)
[table id=15 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]T-Mobile Line Link Secret Codes
[table id=16 responsive=scroll datatables_fixedheader=top datatables_fixedheader_offsettop= 49/]ihaveiPhone Final Words
I hope you have enjoyed the article about the “latest secret codes for iPhone 2020”. So which one from the iPhone Secret codes list, you have picked and tried? What happened when you have applied on your iPhone? Did that code work for you as for us? Tell us in the comment section.
Don’t forget to share this article “iPhone secret codes and hacks list” and dialer codes for Sprint, T-Mobile, AT & T and for Verizon Wireless.
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