You can invite someone to Signal using the "Invite Friends" menu in the app, which will send a text message or email.

To lock Signal, open its in-app settings and select "Screen Lock." It'll use the same security method and passcode that your phone uses.

Instead, you need to open and register Signal on the new phone and select an iOS transfer. Then you use a QR code to connect ...

Some strategies on how to best use Signal to keep your messaging secure. Some strategies on how to best use Signal to keep your messaging secure. is a senior science reporter covering energy and the ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: DANIEL CONSTANTE/Shutterstock The encrypted messaging app Signal has been thrust into the ...

Serious national security concerns have been brought to the forefront this week — and they’re linked to a secure messaging app called Signal. White House staffers have come under fire after allegedly ...

Hitting the streets to make your voice heard can be dangerous. Still, it's your right, so here are our best tips to protect ...

'Signalgate' continues to rumble on, with even more of the Signal messages that were shared between Trump officials – and, inadvertently, The Atlantic – revealed today. But how exactly did this group ...

The chat app, which is run by a nonprofit foundation, has been downloaded 220 million times. Here's what to know about Signal, including who owns it and whether it's safe to use. The messaging app ...

The Trump administration is facing heavy blowback for using Signal, a messaging app, to discuss sensitive military plans. On March 24, officials’ usage of the app was revealed after The Atlantic ...