Unveiling secret numerical codes for mobile devices: a guide to accessing hidden features
In the world of modern smartphones, there are a variety of codes that can help you manage your device's settings and features. This article will focus on two types of codes: GSM and USSD codes, and the functions they serve.
GSM codes are universal across standard mobile networks. These codes can be accessed through the call app and the number pad. For instance, to query the status of call forwarding, simply dial #61#. To enable call forwarding automatically, dial 21#. If you wish to check the status of call forwarding on busy or unreachable, dial 67# or 62# respectively.
Moreover, GSM codes can also be used to manage call forwarding conditions. To enable all call forwarding, dial 002#, and to disable it, dial ##21#. For conditional call forwarding, dial 004# to enable and ##004# to disable.
Another useful GSM code is *31#, which transmits the phone number when calling, and #31# disables this feature. Enabling or disabling caller ID for incoming calls can be done with #30# and ##002# respectively.
For call waiting, dial 43# to enable and #43# to disable. If you want to enable call forwarding after a certain time, dial 61#.
USSD codes, on the other hand, are device-dependent. While they can be used to access certain features, they are not as universally applicable as GSM codes. Not all USSD codes work with every network provider, so their functionality may vary.
Some examples of USSD codes include 135#, which queries the phone number of the device, and 04old PINnew PINnew PIN#, which changes the PIN. To unlock a locked PIN, dial 05old PUKnew PIN*new PIN#. For a locked PIN2, the code is 052old PUK2new PIN2*new PIN2#.
It's important to note that beyond standard GSM and USSD codes, there are no universal, general-purpose numerical codes applicable to every smartphone. Some manufacturers or systems use specific numeric codes for functions like device settings or diagnostics, but these vary widely by brand and model without a universally shared set.
In conclusion, understanding GSM and USSD codes can help you manage various aspects of your smartphone, from call forwarding to PIN changes. However, it's essential to remember that these codes can be device-dependent and may not work with every network provider. Always consult your device's user manual or customer support for specific code information.
