- Close all your unused apps.
- Closing all the apps which you are not using saves a lot of memory usages which can be utilized by other apps to make it run faster.
- Clean all the app cache
- Download Clean Master software from the Play store (here)
- Press Junk Files and let it do its work
- After that press on Phone Boost option.
- Disable the Animations
- Go to "Settings"
- Then Go to "About phone"
- Tap on " Build Number" 7 times.
- Then Go back to settings and Tap on " Developer Option"
- Scroll Down to "Windows Animation Scale". as shown in the Image below
- Tap on "Animation Off".
You can check the complete specs of this phone: Vivo Y15 2019
Vivo Y15 2019 will possibly get security patch upgrades, performance upgrades, and Android pie upgrade as well. You can easily upgrade your phone with OTA Updates.
You simply need to:
Make sure you have at least 40 % battery, to prevent your phone from bricking.
For unofficial upgrades, you need to:
XDA Developers is really a helpful site for the process, support, and Custom ROMs.
You can check the specs of Vivo Y15 here: Vivo Y15 2019