BBK Vivo X21 UD Dual SIM TD-LTE HK SG TW MY 1725
BBK · Announced May 2018
About Vivo X21 UD
The Vivo X21 UD from BBK presents a sleek form factor that measures 74.78 mm wide, 154.45 mm tall and just 7.37 mm thick, weighing in at a lightweight 156 g. Its front is dominated by a 6.28‑inch colour AM‑OLED panel that delivers a Full HD+ resolution of 1080 by 2280 pixels, offering vivid colours and deep blacks typical of OLED technology. The compact yet expansive screen sits comfortably in the hand, making the device suitable for both media consumption and everyday use.
Under the hood, the phone runs Google Android 8.1 Oreo and is equipped with 6 GiB of RAM, providing smooth multitasking and app performance. Power is supplied by a 3200 mAh battery, which aims to balance endurance with the phone’s slim profile. Connectivity is handled through a single SIM slot, keeping the design simple while still supporting modern LTE networks. These specifications combine to give the Vivo X21 UD a balanced blend of style, display quality and everyday usability.
Technical Specifications
All LTE bands (6)
- LTE 1800 MHz (Band 3)
- LTE 2100 MHz (Band 1)
- LTE 2600 MHz (Band 7)
- LTE 700 MHz (Band 28)
- LTE 850 MHz (Band 5)
- LTE 900 MHz (Band 8)
All TD-LTE bands (4)
- TD-LTE 1900 MHz (Band 39)
- TD-LTE 2300 MHz (Band XL)
- TD-LTE 2500 MHz (Band XLI) bands
- TD-LTE 2600 MHz (Band 38)
All UMTS bands (3)
- UMTS 2100MHz (Band I, IMT)
- UMTS 850MHz (Band V, CLR)
- UMTS 900MHz (Band VIII)
All GSM bands (4)
- GSM 1800MHz (B3)
- GSM 1900MHz (PCS, B2)
- GSM 850MHz (B5)
- GSM 900MHz (B8)