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All the secret iPhone codes you should know

If you're wondering what exactly secret codes are, well, these are USSD codes that provide some information when you dial them from your smart phone. Android smart phones come with their own set of secret codes, but each different smart phone comes with its own set of codes, derived from its manufacturer and, therefore, it is a difficult task to keep track of them. On the other hand, there is a bunch of cool secret codes for iPhone that work universally on all iPhones. Curious about that? I dont know Here are 8 secret iPhone codes that you should know:

1. Field test mode

Code: * 3001 # 12345 # *

This secret code on the phone activates the field test mode, which gives you a lot of technical details about your network. However, that is not all, since you can also use this code on your iPhone to get a more detailed view of the signal strength of your network. The bars are a good way to see the intensity of the signal, but if you want to know the exact intensity, you can use this code to see the intensity of the signal in decibels . So, here is how to do it:

When enter the code in the dialer of your iPhone and press the button call, go to Field Test page, where to find various network details. Then just press and hold the Power / Lock button to unless you get the option "Swipe to turn off" . Once you are on the power off screen, simply press and hold the start button and see the bars replaced with the power of the network in decibels.

Once this is done, wait 20-30 seconds for the network to establish. Then, you can take note of the intensity of your seal. If the number is greater than -80 (-70, -60 ..), the intensity of the seal is almost full and it is less than -110 (-120, 130 ..), The network has a seal quite weak . It is important to keep in mind that the signal strength varies depending on whether it is connected to a 3G or 4G network.

For disable decibels and retrieve the usual network bars on your iPhone, you can open the Field Test page again with the secret code and touch the upper left edge, which says "Phone" or simply press the start button once.

2. Hide caller ID

Code: * 31 # mobile number

If you have an iPhone unlocked by an operator or a provider that allows you to hide your caller ID, you can use this secret code to present your caller ID as "Unknown" or "No caller ID" . All you need to do is use the code that works in your country and add the mobile phone number you wish to call anonymously and press dial.

Here is a list of codes that work in different countries:

Albania: # 31 # (cell phones)
Argentina # 31 #
Australia: 1831
Denmark: # 31 #
Canada: # 31 #
France: # 31 #
Germany: * 31 # or # 31 #
Greece: # 31 #
Hong Kong: 133
Iceland: * 31 *
India: # 31 #
Ireland: 141
Israel: # 31 #
Italy: # 31 #
Japan: 184
New Zealand: 197
NEPAL: * 9 #
North America: # 31 # or * 67
Netherlands Passes: * 31 * or # 31 #
Pakistn: * 32 #
Romania: * 31 *
South africa * 31 *
South africa # 31 #
South Korea: * 23 or * 23 #
Spain # 31 #
Sweden # 31 #
Switzerland fixed: * 31 #
Switzerland Mobile: # 31 #
United Kingdom: 141

We tried the code to mask our caller ID, but it didn't work for us, so we suggest you keep your expectations low.

3. Check the SMS center

Code: * # 5005 * 7672 #

Each text message that you enter from your telephone first goes to the server or to the SM S center number, which then sends it to the number to which you sent it. If you have been facing some problems related to SMS, it is better verify the number of the SMS center And you can use this secret code to do exactly that. You can simply enter the code in the iPhone dialer and press "call".