It’s now possible to turn your new iPhone’s screen into a working scale that will measure up to 385 grams (over 13 ounces and slightly less than a pound). We’ve known for awhile that Apple’s introduction of 3D touch into the iPhone 6S gave you the theoretical ability to turn your iPhone into a scale.
In this way, can I use my phone as a gram scale?
Whether you have an iOS or Android device, you can download a free scale app or weight checking app and use it when required. These weight calculator apps use an accelerometer to measure the weight of small objects you place on your phone up to approximation.