Answers for "INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.*.version signatures do not match previously installed version; ignoring!"

INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.*.version signatures do not match previously installed version; ignoring!

cd android &&  ./gradlew clean

npm start -- --reset-cache ( if you are using npm )

react-native run-android

if you are using yarn then after clean run 

yarn android