Motorola One Cell Phone for AT&T: Connect with friends and family with this Motorola Moto One 5G mobile phone. The 6.7-inch touch screen offers clear visuals and smooth operation. Powered by Google Android 10 (Q) OS, this Motorola Moto One 5G mobile phone boasts 4GB of RAM to deliver a lag-free smartphone experience, while the 128GB storage accommodates your media files.