[Samsung Galaxy Core Prime Guides, News, & Discussi] bogarty:
There's not a lot of information out there for the Galaxy Core Prime on how we might debloat and save more space, so I decided to make a short tutorial that might help people with some easy steps in cleaning up their device. This guide is meant to be pretty basic and to just help point people in the right direction so that it speaks to a broader scope of Galaxy Core Prime Models, but is based specifically on the SM-G360T1. The SM-G360T is essentially the exact same phone though, so all of these steps should apply directly to that device too. Other Galaxy Core Prime models will be able to use this as well, but just be sure to read the special "NOTE" part of each step. Also, I'm sure it goes without saying, but inevitably I'll get the question, so obviously, root is required for this! :)

Anyhow, here we go:

1) Do a full backup in recovery before deleting system stuff. This is always a good idea just in case you delete something you're not supposed to and android stops working, then you can just go into recovery(TWRP, CWM, etc.) and restore your backup and your back to square one. It's good to do a new backup too a few days after when you're sure your deleted apps aren't causing any problems so you can restore to that slimmer version later if need be. Also, you should probably save your backup files to the external sd as you will likely have more free space there.

2) Install a debloated rom in recovery. SlimPickins is a great one for the SM-G360T1. It's basically the stock firmware for the MetroPCS Core Prime, but thanks to [MENTION=5618082]Koognod[/MENTION] we can now run Android without all the extra junk using his rom. It comes already debloated, deodexed and deknoxed, so you can just install it and not have to deal with finding all the junk to delete for yourself. It's already gone! It's also great for speeding up your bogged down phone or creating more space for your apps and media. Here is the link. :)

http://xdaforums.com/galaxy-core/development/rom-slimpickins-stock-rooted-bloated-t3250883

NOTE: YOU CAN NOT INSTALL THIS ROM IF YOU DO NOT HAVE THE SM-G360T1. It should work fine on the SM-G360T too, but for anyone else just try googling or searching XDA for your "model #" and "debloat rom".

3) I recommend deleting the "PreloadInstaller" folder from "/system/app/" with a Play Store root browser. You should do this before deleting any system apps in my opinion, as this folder contains an apk that is programmed to put back a lot of the system stuff you delete(either immediately or after reboot). If you don't feel comfortable deleting this folder just yet though, then you can just move it to your external sd card for now with your browser to save space in case you ever want to move it back or just skip this step. Your choice!

NOTE: If you don't have the SM-G360T1 or SM-G360T, then your "PreloadInstaller" folder may be called something slightly different or you may not even have it at all. Just look for something similar in there. Be careful not to delete the package installer though as that's the program that allows you to install apps yourself.

4) You need an app that uninstalls system apps. I use "System App Remover(ROOT)" from the Play Store personally because all your deleted system apps actually go into a recycle bin first where they can be restored later if needed. It also tells you if the app in question is a "Key Module"(ie. proceed with serious caution).

5) Google search the internet for system stuff that's ok to delete for your device. It helps to search your model usually, but I don't think there's much info out there for the Galaxy Core Prime unfortunately, so just searching something like "Debloat Samsung Safe" can be a great resource as many Samsung phones have the same system junk. :)

6) Delete all the obvious stuff you don't want. This would be things like any of the MetroPCS stuff(or whatever carrier you have) or even the Galaxy app store if you don't want it. A lot of Google apps can be deleted too, though you want to be a little more careful with those as Android is pretty much based on the Google Services Framework and many Google apps are tied into the system. Generally, apps like Chrome, Docs, Drive, Hangouts, Maps(if you prefer another map application like Waze or whatever), etc. are good to go if you want. I wouldn't delete any of the core Google apps though that may handle major processes on your phone, like Calendar, possibly even Gmail or any of the ones that you don't know what they do. Deleting the stock camera, gallery, video or music player may sometimes give you problems down the line too, so I would probably keep those. You can also back all your apps up before deleting with Titanium Backup from the Play Store too in case you delete something that you need to put back later.

*NOTE: Some apps, like the Google ones for instance, may cause popup errors after you delete them. This is normal. Your phone's just looking for all those files that were just secretly running a few moments ago. All you have to do is reboot to get rid of those messages. If they still persist, then just reinstall the app.

7) Download an app to clean up that leftover mess. When you delete an app, especially with system stuff, it often leaves a bunch of folders and junk behind. Go to the Play Store and download an app that allows you to clean all that up. There's lots of good ones. I like to use one called "SD Maid" myself. It's good at cleaning up those leftover files and has a feature called "CorpseFinder" in fact that does just that. It also cleans up a lot of other things on your phone.

Anyhow, if you're a heavy power user like myself or you store a lot of music or other media on your phone in addition to 20 million apps or so and you need more space, then I hope this helps you out. Take care guys. Thanks! :)