[Xiaomi Mi 5 ROMs, Kernels, Recoveries, & Other Dev] batGoshe:
The following is about the LOS 21 build:

@-+BB+- Sir, again, your ROM is very well made. And the amazing part is that this is an initial build. I am using it for now 19 days.

I would like to start with a special thanks you kept the minimal required firmware to 9.6.1 and not the latest. They are both compatible. And not everyone is on the latest the first time they are installing a custom rom. If the person doesn’t have the knowledge how to use fastboot or to install a dedicated twrp to go back, he is going to have to invest some time on how to get back the device to a working state, so, thanks again to not limiting to only the latest firmware.

So, your build from february has a solid stability. I tried hard to make it bootloop without success.

- It is the only ROM for gemini I tried, capable of switching to manual carrier network selection.

- Dolby Atmos works fine

- LOS camera works fine

- One of the few roms where the black option in the dark mode works fine

- Charging options also works fine. It is probably supposed to be like this, when it reaches a predefined % it stop as expected but it doesn’t reset the counter. I didn’t found an option to reset it.

- For my use, witch is at least to say moderate (very few additional apps to the default ones), it check all boxes to be installed on a main device as a daily driver.

About things I believe possible to optimise:

- Battery life is good and stable. It is about 75-80% of those on your LOS 20 Octover build (and this one (LOS 20 I mean) has an amazing battery life). My guess is that it is probably related to the com.qualcomm.qcrilmsgtunnel. Whan I see this one in the Running Services inside the Developper options, from experience I know it uses arround 1% of battery every 3-4 jours. And this not only from gemini but also on other oldish devices I have. I tried to stop the service (witch improves thing a lot on the other devices), but on gemini it doesn’t seem to revert the battery loss.

- To check if switching to 3G improves the battery life I selecter “prefered 2g/3g” in the dedicated menu. Currently doing so on every rom for gemini since LOS 19, after selecting something different from the default, 4-6 hours after the phone disconnect from the carrier and to get it back to normal I need to restart it. If I keep it like this it is going to do the same. If I switch to the default 2g/3g/4g it works perfectly.

- During the install I had an error message: Cannot log to file /dev/fscklogs/log. But the Formating process was OK and the install was successful.

- After the first boot and setting the device, I had to reboot to make the notifications bar works by scrolling.

- If battery low and switching off the device, when connecting to the charger it is going to apply slow charging. To make it charge normally I disconnect the charger and half a minute after I connect it again and it start charging normally. I suppose the booting process may be optimised, it seems it takes not the same time on similar booting process. But I am not sure, cause my battery is at about 55% battery life, so it may be related to this.

I believe your LOS21 deserves a dedicated thread

Greetings and cheers :-)