There's a hidden language that's part of the GSM standard that can unlock hidden features on your smartphone. You can dial codes to check your bill, data usage, forward calls, hide your caller ID, and ...

You could access numerous useful iPhone features by typing in a few secret codes on your device. Lots of the codes work whether you have an old or new iPhone and they can let you do things like ...

Every iPhone has a hidden “Field Test Mode” that will reveal helpful details like its signal strength and unique identifiers like its IMEI number. These aren’t normal features that you can find in ...

Ian Campbell is a reporter based in San Diego who writes features, interviews, guides and reviews for Pocket-lint. Before he spent his days covering great products for Pocket-lint readers, Ian was an ...