Realme patent a new camera module design having a square camera bump at top-left corner. The camera module contains a quad cameras and beneath that LED flash is located. After that, finally, rear mounted fingerprint scanner equipped at the rear panel. 
Moving around the front, it has dew drop notch design display with almost 6.0-inch to 6.4-inch size. The display is based on IPD LCD panel. Also, as per the mobile features it could comes under budget price segment. It might be a design of upcoming Realme U series line up namely Realme U2. 
On the Physical overview, on the top, nothing has been placed, then on the sides, at the right, power on/off button and at the left, volume keys & SIM card slot is located. Moving around the bottom, micro USB port, 3.5mm audio jack, speaker grille and microphone is located.
The realme U1 mobile has been launched two years so the new patent design might be a upcoming launch of Realme U series. However, as per renders design it could be under budget price segment. So hopefully it will be Realme U or Realme C series probably.