You might think you know everything about your better half iPhone, but you’re wrong. There’s a whole world of hidden features that can only be unlocked with secret codes. *GASP*

Excited? You should be. Here’s what the features actually do.

5Find out exactly how much signal you’ve got:

Those little balls of signal might be the standard indicator to a strong connection, but they’re not exactly a precise reading, are they? If you’re tired of hanging out of your first-floor bedroom window to send a text, there is a simpler way.

By converting your signal balls to a more accurate numerical reading, you can simply follow the digits to improved call quality.

To do this, you’ll need to enter the first of our secret iPhone codes*3001#12345#* into your handset’s dialer and press call. This will launch the phone’s Field Mode, a secret set of menus usually reserved for developers.

While here, try holding your phone’s power button until the “slide to power off” option pops up.

Now hold your handset’s home button until you see the home screen make a reappearance and goggle in wonder as your signal is now displayed as a number.

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If you’ve got a score around -50 you’ll be able to enjoy HD streams on the move. A score of around -120, however, and you’ll be back in the stone age.


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