[Samsung Galaxy S10+ Questions & Answers] thefish123:
Hi XDA’ers

I thought I would provide an update on my experience thus far with LineageOS 19.1 on my Exynos SM-G975F and answer some of my own questions which I asked above. Maybe some of this is obvious stuff or maybe not. Maybe it will be helpful for others in the future.

The operating system​

I installed LineageOS from the official lineageos.org website. I did not install GApps so I am operating without the Google Play Services.

While Android itself is open source, the “Google Play Services” are not. They are a proprietary library from Google that are included with most (all?) Android devices and provide a number of services, APIs, etc. to apps running on Android. It's not part of the operating system per se, but lots of apps require it. So, I am operating with LineageOS only without the Google Play Services.

As a side note, there is an open-source re-implementation of Google Play Services called microG. MicroG cannot be installed as an app but needs to be installed as part of the OS. There are basically two flavors of LineageOS that include microG. They are “LineageOS for microG” and /e/OS. Both of these include microG. Pure LineageOS on its own however includes neither Google Play Services (unless you install GApps bundle) nor microG.

I was surprised how small the download file was for LineageOS. It weighs in at just 777 MB. I am used to Samsung firmware that weighs in at about 6 GB. So, this seemed really small to me.

Upon first boot up I was impressed with how clean the operating system was. Not only is there no bloatware but there is basically almost nothing at all. There is a dialer app, an SMS app, a camera app, a calculator, and a mini browser. There is also a local-only address book (no link to cloud services) and a local calendar app. The browser is fairly limited but gets the job done. Notably there isn’t a mail app (although I understand that there used to be one on previous versions of LineageOS). So, I set about seeing what I could do.

Apps​

I installed the F-Droid app store but there are not any mainstream apps in there. Some of the apps in there might be good (I still need to explore it more) but I needed a solid email app. My company is on Office 365 so Outlook would be my first choice.

I stumbled upon APKPure and APKMirror. Both are very ad-filled spammy looking website that seems to be a web-based front end to the Google Play Store. Using these sites website, you can download official APKs for mainstream apps like Outlook, Word, Excel, etc. Be very careful where you click. Lots of the ads on the site include "Download Now" type buttons that you can click on thinking you are downloading an APK but instead are clicking on a spammy ad. So, navigate carefully on these sites.

I was able to install Word, Excel, OneDrive and Outlook. This was huge because I needed a decent mail app. Being able to install OneDrive meant I could now sync my camera with OneDrive. All the Microsoft apps worked flawlessly on LineageOS even without Google Play Services. The one thing I noticed however is that Outlook does not give me notifications when I get a new email. I have to go into Outlook and swipe down to refresh. I believe this is due to the lack of Google Play Services. Maybe using microG would eliminate this problem (not sure). I can live with this for now but would obviously like a way to resolve it.

Installing Outlook synced the local Calendar and Contacts apps with my Outlook contacts and calendar so that worked great.

Bible Apps​

Both the Olive Tree Bible Reader app and the ESV Bible app installed no problem from APKPure. Both of these are offline Bible apps (they download the whole Bible and can be used offline). I like Olive Tree because I have several translations (including the SBLGNT) and Olive Tree lets me switch between them. The ESV app is great because they have recordings and so you can hear Kristyn Getty or David Cochran Heath read the Bible to you in natural non-synthetic voices.

Signal​

I installed Signal directly from their website (they offer the APK directly on their website). Signal detects that it is being installed on a device without Google Play Services and so registers itself as a service and consequently I

do

get notifications for new Signal messages (unlike Outlook). I wonder if there is some way to make Outlook run the same way. I tried installing Microsoft Teams which we use at work but don't get any notifications when people send me messages. So that makes Teams pretty useless.

Browser​

The build-in default browser renders HTML/CSS just fine but is very limited in terms of features. When you install a progressive web app as an app on the home screen it works but launches in the full browser with the address bar visible which breaks the app-like experiance which is really the whole point of a PWA. So I set about trying to fix this. To my surprise I was able to install Microsoft Edge without ANY issues whatsoever. It works great and web apps pin to the home screen the way they should (and open as apps). So I made Edge my default browser.

Keyboards​

The default keyboard in LineageOS does not have stickers or GIFs. That is as it should be I think for a default built-in keyboard. But it does not support swipe typing either. This surprised me. It seemed like a huge step backwards to have to tap out every letter with my thumbs. Do people still type like that on their phones?!?! Oh, the humanity! :)

There is a microphone icon at the top of the keyboard for speech-to-text transcription. I used this all the time before on my Samsung S8+. But tapping it did nothing. Apparently I am missing a speech-to-text engine. This surprised be because Outlook has dictation built-in using Microsoft's engines and works well. But it only works in Outlook and not universally throughout the phone as it would if it was built-in on the keyboard.

I installed the Microsoft SwiftKey keyboard and that gave me stickers, GIFs and... swipe typing! Woo Hoo! But I was really hoping it would give me speech-to-text since I dictate almost all of my text messages. I figured it would use Microsoft's engine like Outlook does since it was a Microsoft app. But tapping the microphone on the SwiftKey keyboard promptly tells me that I need to download "Google Voice Search".

Microsoft Authenticator​

I installed the Microsoft Authenticator app for 2FA and it installed just fine. But it was impossible to add any accounts by scanning the QR codes. I think this is due to notifications not working properly, probably also due to the lack of Google Play Services or microG.

Outstanding Issues​

So, the outstanding issues I have right now are:

Microsoft Authenticator is non-usable. This is a huge issue for me

No speech-to-text transcription from keyboard

No notifications in Microsoft Teams

No notifications in Microsoft Outlook (this I can live with).

What I Like​

What I like about LineageOS is the clean, minimalistic design of the operating system. I am not pushed into any particular "ecosystem" be it Google, Samsung, Microsoft or Apple. I can decide which ecosystem I want to participate in and to which extent. For example, I could download Outlook without downloading Edge and I don't need to backup my photos to OneDrive unless I want to. You can do this, to some extent, with OEM versions of Android, but it requires ignoring and disabling things. Come to think of it, that is really what an operating system should be - a platform for running apps, not an on-ramp into an ecosystem.

What irritates me is that not all apps work as they should. It seems like Google Play Services is an important part of the mix and many apps fail to function properly without it. Signal seems like one exception. It detects that you are not using Google Play Services and adapts the functioning the app accordingly.