[Lenovo P2 ROMs, Kernels, Recoveries, & Other Devel] alirazaagha:
Solution for Device not certified issue.

Fully Compatible GCam 7.4 by Parrot

Enjoying new features but Facing battery drain issues?

Android 10 has been the most versatile Android hence, it came with all kinds of goodies such as new features, performance improvement, better permissions and security settings.

Please, don't complain that battery life is not as good as Android 9 because, Android 9 was NOT as good as Android 10.

Overnight battery drain issue has been fixed. If you are still facing it then you can try following methods to improve battery life (I will update it if there is a better strategy):

# Install blazemax kernel 3.4 and Magisk for root. Install a kernel manager app. Select "elementalx" governor for CPU and "balanced" governor for GPU. Enable "IntelliPlug" from CPU Hotplug and that's it.

Following are optional:

# Use Pure Black theme rather than light or grey

# Disable "Device personalisation services" from settings

# Disable "Find my device" from security settings

# Disable printing services from system settings

# Disable "Battery Manager" from system battery settings (optional)

# Freezing "Digital Wellbeing" may also help (optional)

More Tips for Improved Performance and Enhanced Battery

We install plenty of apps in our mobile phones to use for various reasons which may require us to use those apps regularly or when it's needed on random days a month. Some of apps are needed to work in background such as social networking apps. Whereas, gaming apps are needed to work only when needed. Other breed is known as bloatware which are not used by us but are part of system app partition. Gaming, infotainment and bloatware apps shouldn't be working in the background as they not only use battery but also use our data for ads and such. So, these apps should be disabled when not in use.

We need to have knowledge of all such apps and their relevant categories because this information will result in snappier performance of our phones along with good battery life by following the below mentioned trick.

You will need:

1. Titanium backup app

2. AirFrozen

Detail is given below:

1. Titanium backup app is one of the veteran apps which is good for backing up your app data so you can resume from where you left in previous ROM or phone. It's made for rooted phone users. It can be used for disabling the unwanted apps by using freeze command. I recommend that you should freeze bloatware which you don't use at all. But be very careful while disabling system apps. You can download this app from Google Play Store. But if you don't want to backup your apps then no need to install it. Just go for next app.

2. AirFrozen app is for people who have such apps which are not needed to work in background but are needed to be installed. Such apps include gaming and infotainment apps etc. By using AirFrozen; you can easily freeze/disable an app and can still open frozen app for use with couple of touches. This way the app gives you few major advantages; disabling the app which prevents background processing, data and battery usage and unwanted notifications. Secondly, frozen app is hidden from sight yet ready to open upon couple of taps. I don't want my son to know that I have battle royale game installed in my phone. Hence, I've frozen COD in AirFrozen. Few other infotainment apps and Titanium backup are also frozen in AirFrozen. Give this app a try and you will love it. You can download AirFrozen from Play store.