[OnePlus 3T Guides, News, & Discussion] :
Because most dev's are busy with the switch to Pie now, I will wait a little more till I make the switch to one of the Pie rom's.

I am very curious what Omni, OmniDragon and GZOSP will bring (and when ofcourse.... :):):)) related to Pie.

In the mean time I have done some further testing without any Google Apps and I still have not found any reason to install the Google Services and related packages.

Only issue I have now is the push messages from Google servers which is used in for example Whatsapp, is not working without. This can be solved with MicroG btw for them who really need real time arrival of messages.

I switched some apps to go more FOSS and get rid of some trackers on background.

For who want to know, I am using now:

K-9 mail as my email client

FOSS-browser as my browser, which is using webview in background

Etar as my agenda/calendar app

QKSMS as my sms client

Face Slim as my Facebook wrapper

HERE We Go as my navigation

App parking (SMS parking) as my mobile parking app

Loyalty-Card-Locker as my customer loyalty card app

Simple Mobile Tools Contacts as my contacts app (showing more fields then AOSP contacts app)

Simple Mobile Tools Gallery as my gallery

Forecastle as my weather app, using OpenWeather in the background

SecScanQR as my QR code reader

Kernel Auditor from HolyDragon as my kernel manager

AppOpsX to set my app options

ForceDoze for immediately deep sleep

Battery Charge Limit to limit the battery charge limits (79-81%)

Open Camera as camera app

Total Commander as file manager

F-Droid and Yalp Store as my app stores

What is may be more important; because most of the apps above do not have trackers in the background and do not rely on background processes, it also improved the drain on my phone. As said several times by several people, worse apps are killing your battery and do have more effect then the rom and kernel. With the apps above, I constantly have zero percent drain overnight (=<1% so not visible) and also drain during usage is much improved.

I am still on GZOSP which is fast and lean but missing functionality like theming (dark, black and other themes, font manager etc...) which in fact, I am not missing anymore.

My phone is doing it's work as it should be, that is the most important, is fast, launcher and look are great so I am very satisfied at the moment.

For the kernel I have done some tests last weeks and although some people are very enthusiastic with Mady's kernel it does not impress me at the moment.

The fastest kernel is still HolyDragon's, in combination with the low drain it is a very good choice.

I found my match with Caesium; the lowest drain in combination with good performance and the options I need. This kernel is very up to date, stable and does have an incredible low drain. Even Luis and Mady's are doing not as good as default Caesium in this at the moment, which is strange because Luis is based on Caesium and made with even lower drain in mind.

So for kernels, based on drain and then performance, this is my list at the moment:

Caesium kernel (incredible low drain and still very good performance)

Luis kernel (low drain, performance is good)

HolyDragon's kernel (great performance with low drain)

Mady's kernel (low drain and good performance)