Installing the Samsung A127F USB driver is a straightforward process. Here are the steps:
Navigate to > About Phone > Software Information on your Galaxy A12.
Many users download the "Samsung USB Driver for Mobile Phones" (version 1.7.86.0) and wonder why their A127F still shows a yellow exclamation mark in Device Manager. The reason is hardware architecture.
: Disconnect your device and uninstall any previous Samsung drivers.