How to Chat in Facebook app Without Messenger

Facebook Chat Enabler Reborn

Hi guys,
as you know the famous Facebook Chat Re-Enabler (old thread's OP available below) stopped working when Facebook updated their app to the v28, now after many hours spent finding a solution in the previous months I'm proud to present this new solution!

I state that personally I don't want to be forced to install an app (which I hate for many reasons) only to use Facebook chat or send/receive its messages. 

Some disadvantages of Facebook+Messengerinstalled at same time:

• Increased battery drain: main thread+background ones for services and receivers are always active
• Increased load on general resources (like CPU and RAM memory) for the reasons mentioned above
• You're forced to install another app to chat while you could safely use an unique (Facebook app)

Advantages of Facebook+Facebook Chat Enabler:

• Never executed by the operating system, meaning no more battery drain and no resource eating at all (Facebook app itself drains battery)
• Chat and send/receive messages in main Facebook app without Messenger

Download
Since Reborn version's release I will not share Enabler's apks anymore (and you're not allowed to), but a simple app which allows you to download and install suggested Chat Enabler version for the Facebook app found on your device, called Facebook Chat Enabler Helper:

Features:

• Easy to use, just two buttons
• Facebook Chat Re-Enabler for Facebook app until v27
• Facebook Chat Enabler Reborn for Facebook app starting from v28
• Override mode to let the user choose what version wants
• Support text and little how-to for the user
• No extra permissions required:
  • android.permission.ACCESS_NETWORK_STATE is required to determine if the device has an Internet connection available
  • android.permission.INTERNET is required to download and let you install chosen or suggested Chat Enabler version between Re-Enabler and Reborn
  • android.permission.WRITE_EXTERNAL_STORAGE is required to write in memory the Chat Enabled package which is being downloaded
• Root not required

Note for Reborn: it is a modified Messenger package, for several reasons its manifest can't be edited so I had to keep it untouched. Originally requires many permissions which are not used at all by Chat Enabler's modified package, therefore completely safe. I'm not going to track you, your wife or your friends 

APK file: https://www.androidfilehost.com/?fid=24052804347841072

APK file (mirror): https://drive.google.com/open?id=0B9...HBlNGFSMEk0NHc

Issue report: http://goo.gl/forms/hYglu5VrcM

Warning: In case of devices which have Messenger installed out of the box and not user-uninstallable, Facebook Chat Enabler Helper can't uninstall it. This is the limitation of having Messenger in /system partition, therefore root is required to get rid of it. Do not blame me or my work for this, neither report it in the issue report. It's not my fault!

Instead, follow this:

1. Search for root methods available for your device and root it
2. Install Titanium Backup, open it and search for Messenger, then uninstall
3. Install my app from the links above