To Increase the speed of your slow Android phone here is the guide to speed it up in 5 Minutes
1. 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.
2. Clean all the app cache
Download Clean Master software from the Playstore
Press Junk Files and let it do its work
After that press on Phone Boost option.
3. Disable the Animations
1. Go to "Settings"
2. Then Go to "About phone"
3. Tap on " Build Number" 7 times.
4. Then Go back to settings and Tap on " Developer Option"
5. Scroll Down to "Windows Animation Scale". as shown in the Image below
6. Tap on "Animation Off".
You can check the complete specs of this phone:
In the meantime, do not forget to find all the detailed specifications about the Oppo A71 here.