Ever returned from a trip abroad with a soaring cellphone bill due to roaming charges? Israeli startup Cell Buddy has created a sim card that will work anywhere in the world, without racking up roaming charges.

Radiation is a serious matter in Japan. Two of the worst nuclear catastrophes in human history took place in the Asian country. Now Israeli company Tawkon is taking its cellphone radiation detection app to Japan.

Onavo, the creator of popular data compression apps for iPhone and Android, recently launched a new app to help you track apps the most data-hungry app. Onavo Count allows you to view a 30-day history of how apps use cellular data. The app is also integrated with Onavo Extend, which compresses unencrypted data in order to help users get more from their data plan.

An Israeli startup's 1x1 mm mouse could take a starring role in everything from mobile to medical technology as design goes smaller. Applications could range from tiny mouse-controlled medical devices inside the body to gaming devices with two micro-mice positioned to let player's thumbs control the action.