Heads up! I froze these apps (phone related apps) and they basically crashed my phone.
I used Bloatware Freezer Free to freeze these apps (it gave me the green light lol):
phone, contacts, contacts storage, Google contacts sync, messaging, and phone/messaging storage.
Upon rebooting my phone, I got stuck in the continuous loop of popups saying "Unfortunately, phone has stopped working." Luckily, I was able to navigate my phone between each popup (like .5 second) and unfreeze those apps.
Not sure which apps are the problem but my guess is the storage apps; I had frozen phone and messaging apps previously, both without problems. It was only until I froze the storage apps that my phone crashed. But I could be wrong.