The Texet TM-D421 cell phone is made in a monoblock form factor and has a stylish, classic design. On the front side there is a bright 2.8-inch display and a control panel with buttons. One of the notable features is the support for dual SIM cards and a memory card.

To take photos and videos, a camera is offered, next to which there is an SOS shortcut button. The speaker produces clear, loud sound. Functional features include a flashlight, MP3 player, radio, and voice recorder. Texet TM-D421 has an energy-intensive 4000 mAh battery. The Powerbank function provides the ability to recharge portable devices from a USB port.