You can use Wi-Fi calling on your Android or iPhone to make calls using Wi-Fi rather than your cellular network.

Peer-to-peer messaging apps work without the internet by connecting phones directly. Briar is a useful app for offline messaging, especially in remote areas or emergencies. Setting up Briar requires ...

SMS messages don't need a data or Wi-Fi connection. RCS texts are more modern and can work over Wi-Fi. The Google Pixel 9 series phones have a “Satellite SOS” feature for emergencies. Satellite SOS ...