MANILA, Philippines—On Dec. 6, the House of Representatives has approved on final reading House Bill No. 5793, a measure seeking to require the registration of subscriber identity module (SIM) cards.

Your phone's SIM card allows the device to make calls, send texts, and connect to the internet. The SIM card provides a phone number that identifies your device on the carrier's network, whether it's ...

Every smartphone needs a SIM card that assigns you a phone number and lets you call, text, and use the best data plans. But, there's more than one type of SIM card, and the user experience varies ...