Android: Hold down the power button, or the power button and the volume down key (depending on your Android phone), until the ...

Having cellphone signal issues? Try this quick Airplane Mode trick first — it might fix the problem faster than you think.

Four bars doesn’t distinguish 75% from 100% signal strength. You need real numbers to find your sweet spot. On an iPhone, you can access a hidden diagnostic feature called Field Test Mode. It isn’t in ...