A peak flow meter is a handheld device that measures airflow rate and can help those with respiratory conditions like asthma monitor their condition.

Apple included a number of satellite-based features in its latest iPhone models to help users keep contact in an emergency. Here's what they are, and how to use them if you have no signal. Major ...

Wi-Fi and cellular networks cast an incredibly wide coverage net for all of us smartphone and mobile device users. From one carrier to the next, you'll be hard-pressed to find yourself in any corner ...