[Xiaomi Redmi 2 ROMs, Kernels, Recoveries, & Other ] RandomNewbie:
Thanks a lot for this ROM, I switched to this a few weeks ago and with a few extra apps this is simply awesome. My biggest dread was that WiFi isn't stable, but I haven't had a single outage so far. Thanks for that already! :) Before I had the MIUI ROM from xiaomi.eu, which was on Android 4.4.4

To help others making their experience with this ROM even better, or just if other people are curious, here are a few things I noticed:

- By default, sound from the phone's speaker has pretty low quality. It lacks depths and anything that has to do with bass just doesn't exist at all anymore. Thankfully it's possible to fix this by flashing Quasar AtmoX. Here is the link: https://androidfilehost.com/?fid=817550096634779477 (original source: http://en.miui.com/thread-657543-1-1.html, mirror). With the help of that sound is even slightly better than on the MIUI ROM! Hasn't caused any issues over the past weeks for me.

- On Android 7 and previous versions it's such a pain to select the SD card as the storage path in quite a lot of apps. Seems many of them haven't been updated to support the storage provider selection, how it is supposed to be. The fix? Using Magisk as your SuperSU app and using this module: https://xdaforums.com/apps/magisk/module-exsdcard-write-access-enabler-t3670428 - There is a module for Xposed too, but in my case I didn't want to install Xposed

- The stock camera doesn't improve the picture quality of night photos, and in general, even in daylight conditions, pictures tend to have lots of colored noise. You can improve it by using the camera app from LineageOS. You can install the app like any other one, however photos and videos can't be saved on the SD card for some reason. Here is how it works: Use a root file explorer (MiXplorer from XDA is pretty awesome!) and go to /system/priv-app. Create a folder called "Snap" and copy your Snap.apk file into this folder. Adjust the permissions to -rw-r-r if you have to and reboot your phone. Then the camera app is available! (The camera apk is from this ROM: https://xdaforums.com/redmi-2/development/redmi-2-resurrection-remix-5-8-0-t3530566) The only drawback is that panorama mode doesn't work in the app. And you need to reload the camera app if you select any other scene, or else it doesn't take effect. An alternative is Snap Camera Trial as this supports noise reduction too.

- Greenify is unfortunately no complete alternative to MIUI's battery saver, but still better than nothing or blindly relying on Android's doze feature. Maybe someone else can show me an app that is similar like the battery saver in MIUI? :confused:

- Kitkat or Lollipop bootloader doesn't seem to matter, I have the one from Kitkat and it's all fine. Getting the bootloader locked from Xiaomi by flashing their original ROM (the device wasn't locked in the first place, back then they didn't do that) isn't really what I wanted

Also, I noticed a few bugs, which are luckily no dealbreaker, but can be irritating at first:

- Standard LED settings aren't respected, it sticks with its default setting anyway. To workaround this, it helps to set custom LED settings for each app

- You might want to exclude system apps such as "Android System" in Android's battery optimization, if connection issues occur during standby. At first I had weird WiFi behavior when my phone was in deep sleep, but ... well, seems this fixed it. I'm not 100% sure though.

- File operations on SD cards in file managers take long, as if it seems to process only like 4 files per second, no matter how big or small they are. To avoid this bug, you can use the path /mnt/media_rw/ for your SD card if you installed Magisk and the ExSDCard Write Access Enabler module. Then it's as quick as it should be. Related to this, when new files are added or deleted, for some reason the amount of used space doesn't update. Unmounting and mounting the SD card in the settings app or rebooting the device gets around this. Or just do all your file operations over the /mnt/media_rw/ path, as mentioned above.

- When you install Android apks outside the Play Store, the confirmation dialog might not show a touchable "Install" label, as others mentioned before. Instead of turning your screen on and off, just press the button to show recent apps, and then switch to the install dialog again. Then the "Install" button isn't greyed out

Finally, be careful if you are going to use root apps such as HEBF Optimizer, without changing anything and applying the settings from this app I managed to cause a random reboot when I uploaded 200 MB of data in MiXplorer on my shared folder. Might be not caused by this, but since I restored a backup and haven't touched the app again, that problem never showed up again.

Hope this helps other Redmi 2 owners who are unsure which ROM they should choose and want a little "kickstart" to know more about what they can expect and do :)