BG1 is a glucometer work with a smartphone app via ear jack. So it can work with any type of smartphone regardless their different data socket and wireless interface. The app is auto launched when BG1 is plugged in. The test data transferred to the app as while as iHealth Cloud. The app shows glucose level and trend for glucose management. The app also has a user guiding animation, a strips management module which can alert the user for strip type, expiration date, and the number left. The size of the BG1 is really tiny and shaped joyful like a clear water drop, very easy to carry.