SIM card

Piece is about the size of a credit card, and designed to fit inside a user's wallet or purse

Mobile Technology

This credit card-sized Bluetooth device gives your phone a second number

If you use a smartphone for work and you don't have access to a dual-SIM handset, this usually means carrying two phones around. A new device aims to provide a simple alternative: Piece is an adapter that allows two phone numbers to be used with one phone.

The Portable SIM is a prototype device developed by NTT Docomo that forgoes the need to insert a SIM card into a smartphone

Mobile Technology

NTT Docomo develops wearable SIM card

NTT Docomo has announced the development of a wireless Portable SIM prototype that can be waved in front of a compatible smartphone to provide network authentication information. The device could provide an easier way of switching between handsets in the future.

The KnowRoaming sticker is attached to the user's SIM card using an included applicator

Mobile Technology

KnowRoaming could drastically reduce roaming charges – using a sticker

It's a pretty common experience – you get back from a trip to another country, and discover that you racked up huge roaming fees. KnowRoaming is now offering a solution: an electronic sticker that is said to reduce roaming fees by up to 85 percent.

Good Thinking

MicroSIMcutter trims oversized SIM cards down to size

A new SIM punch from MicroSIMcutter trims oversize SIM cards for use in modern mobile phones.