Late on Monday, Apple filed for invalidation and non-infringement of a patent central to a long-running legal battle about the Personal Hotspot feature on the iPhone with patent aggregator IXI.

Also called "tethering." All carriers offer stand-alone portable units, called a "portable hotspot," "personal hotspot," "mobile Wi-Fi," "mobile router," "mobile wireless router" or "travel router." ...

1. Open the Settings app and then tap "Cellular." Depending on your version of iOS, "Personal Hotspot" may be listed on the main Settings page, not within the Cellular page - if so, tap "Personal ...

A personal hotspot can be a lifesaver. When you find yourself somewhere that has no WiFi, you can share your phone's cellular connection with your laptop and other devices to get online.