Developer options on the Vivo Y21 series can change Android system settings and provide connectivity with computers. This option is hidden by the phone manufacturer but can be activated by a special method.
Developer Options
How to Activate Developer Options on Vivo Y20, Y20s
Vivo Y20 is equipped with a Qualcomm SM4250 Snapdragon 460 chipset with an Octa-Core processor with a speed of up to 1.8 GHz. The performance of this phone is also getting better with the support of 4GB of RAM.