The smartphone runs Android 5.1.1 Lollipop with HTC Sense and sports a 5.5-inch HD (720×1280 pixels) IPS display. It has 13-megapixel rear camera with LED flash, but a 5-megapixel secondary front-facing camera instead of an 8-megapixel one. It is powered by a 1.3GHz octa-core MediaTek MT6753 processor and 2GB of RAM.
The 16GB inbuilt storage on the Desire 728 Dual SIM is expandable via microSD card (up to 2TB). Connectivity options on the handset include Wi-Fi, FM radio, Bluetooth, GPRS/ EDGE, GPS/ A-GPS, 3G, Micro-USB and 4G LTE TDD connectivity with support for Indian networks. According to the official listing of the HTC Desire 728 Dual SIM, the handset is backed by a 2800mAh battery that can offer up to 21 hours of talk time and up to 485 hours of standby time in 3G. It measures 157.9×77.84×7.87mm and weighs around 153 grams. It was launched in China in September last year.
The new Desire 728 Dual SIM has HTC BoomSound technology, which is complemented by Dolby Audio as well.