How to use secret codes on iPhone
How to use surreptitious codes on iPhone

Most people probably don't know how to use secret codes on iPhone. In fact, most people probably don't even know that the iPhone has hole-and-corner codes. But it does — and we've tried them.
Although most of the iPhone's features are tucked abroad inside apps, widgets and the Control Center, there's a whole heap of hidden treasure waiting to be uncovered via the dialer.
For more 20 years, mobile devices have made apply of Unstructured Supplementary Service Data (USSD) codes. They wait similar a series of numbers interspersed with hashtags and asterisks that you enter similar a phone number.
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Created for GSM phones, they connect straight to your service provider'southward computers and allow you access to hidden features. Many are specific to a item carrier, merely a good number of them will piece of work regardless of which company you're signed upwards with. And they'll piece of work whether you're using an older handset such as the iPhone SE or the latest iPhone 13 or iPhone thirteen Pro.
With that in mind, we volition explore some of the about useful and interesting cloak-and-dagger dialer codes. To utilise them, open the Phone app on your iPhone and tap Keyboard. Yous tin then apply the numbers and symbols on display.
How to find IMEI on iPhone
All cellphones accept an International Mobile Equipment Identity (IMEI) number which is unique to each device. You may be asked to provide it if you want to unlock your iPhone for use with another network. The number tin can also come up in handy if your iPhone is lost or stolen, allowing the handset to be identified.
ane. To find your iPhone IMEI number, enter *#06#
two. You do non have to press the green dial button. The data you need will automatically brandish.
When making a telephone call on your iPhone, your phone number will be displayed on the device of the person you are calling. This is not e'er ideal, just y'all tin quickly hide your Caller ID using a USSD code before the person's telephone number.
1. First, enter *67 (or, if you're outside the U.South., endeavor #31#)
2. Now enter the person's number including the area code.
3. When yous're ready to dial, tap the green button.
How to launch Field Test mode on iPhone
If y'all want to admission technical information near your iPhone's cellular indicate and connection, so you tin can make apply of the hidden Field Examination way.
Primarily designed for technicians and engineers, it allows yous to check your network. Unfortunately, however, one of its primary uses appears to have been axed in iOS 15 — the ability to view the strength of your signal as a numerical value.
Despite that, it's worth taking a wait, if just out of marvel, since it gives details of local network and cell towers. If nothing else, you lot may be surprised this feature exists at all, although Apple has been busy behind the scenes overhauling its advent in contempo years.
ane. First, swipe down from the right-hand side of the iPhone screen to view the Command Eye and plow off the Wi-Fi.
2. At present launch the Phone app and dial 3001#12345#
3. You lot will be instantly taken to the Field Exam screen which is split across two tabs: Dashboard and All Metrics. In truth, most of the data contained beyond these screens is unlikely to be of interest.
4. If you are on iOS xiii or iOS 14, yet, you lot should tap All Metrics and, after scrolling downwards, tap Serving Cell Meas — which is under the LTE heading.
5. Wait for rsrp0 and rspr1 (indicating the towers closest to you). These show the cellular indicate strength in decibel-milliwatts. To signal a potent betoken, the number need to exist around the -40 mark. When the number reaches -100, you're in an area with a much poorer signal.
How to divert incoming calls on iPhone
When your iPhone is busy because you are on a call, you tin can have other incoming calls diverted to some other number. This could exist to a landline or another cellphone number. It is likewise possible to divert calls if your iPhone is unreachable or have them diverted if you don't answer or reply.
1. Offset past identifying what you lot want to practice.
To forward calls when you lot don't reply, dial *61*
To forward calls when your iPhone is unreachable, dial *62*
To frontward calls when your iPhone is busy, punch *67*
2. Enter the number you want to divert to, then tap #
3. Now tap the green Punch button. You should get a confirmation. If this does not work, check your network for the alternative codes.
iv. To deactivate these services, enter #61#, #62# or #67# depending on the original lawmaking and tap the dark-green Dial button again.
5. If yous want to detect the electric current status of any of these services, dial *#61#, *#62# or *#67#
How to enable phone call waiting on iPhone
If someone is trying to get through while you lot're on a call and you would like to be informed, ensure phone call waiting is enabled. This will also give you an selection to answer the new call.
1. Simply dial *43# and tap the greenish button.
2. At present tap Dismiss when the confirmation screen appears.
3. To stop phone call waiting, dial #43#.
How to foreclose outgoing calls on iPhone
If y'all are passing your iPhone to someone, you may want to forbid them from using the device to make a phone call.
1. To begin, dial *33*
2. At present enter a PIN followed by # – this will foreclose someone else easily turning the function off.
3. Tap the green Dial push and tap Dismiss when you receive the confirmation.
four. To disable lawmaking barring, dial #33*your pin#.
How to keep experimenting with underground codes
Some secret codes will piece of work on your iPhone with your carrier, but some volition not. The only fashion to truly find out is to give them a go. Here, we listing some other USSD codes that you lot could try. With a bit of luck, you'll unearth some usable treasures.
Cheque the number of minutes left on a contract: *646#
Discover your electric current residuum: *225#
Encounter how many calls you lot accept missed: *#61#
Bank check the SMS Center: #5005*7672#
Enable Enhanced Total Rate style to better voice quality: *3370#
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Source: https://www.tomsguide.com/how-to/how-to-use-secret-codes-on-iphone
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