error entering minecraft

the error is mostly occurring on weaker phones the minecraft is not just entering the white screen writing "Minecraft" and it does not open already uninstalled and installed several times and does not enter this must be a fatal bug that is occurring I hope it is resolved quickly or necessarily today March 30, 2018, my cell phone is a Lg k5, but that does not matter why the error is in the game because before I update it was working normal another bug is that the minecraft closes alone after an hour this does not It's RAM problem!