Try install ANT+ Plugin Service from Google Play Store.

Other than Protected Apps setting, you need to set Allowed in Setting > Apps > Advanced > Ignore Battery Optimization for any apps encounter no notification issue. This fix my Gmail Inbox no notification problem.

If problem still persist, you may want to wipe Cache via Recovery or wipe apps data and reconfigure again. Hope this helps.

My Calendar on status bar also can't display the correct date icon in notification bar. Not sure it is Mate 8 specific issue or common on Android 6...

For Tasker to work properly, need to allow the app in Accessibility service too.

If your phone is exposed to sun light, it will turn very hot because of metal body, same thing happened to my old G8.

You do not need root, just activate in Google Now setting

Bro can share photo of your Mate 8 with Pavoscreen SP? Interested to see how much thickness added to the phone. The original Huawei glass SP come with the phone is thin but lousy oleophobic effect...

I checked with Taobao Aukey official seller, they confirmed Huawei Quick Charge is not supported. Guess need to wait for official Huawei charger, especially i need the car charge.

hmm, the premium one should come with tempered glass SP

Means Mate 8 Quick Charge is supported by Huawei own charger only...

I tried survey via Google no one report the success of fast charging using 3rd party quick charger. Be it QC2 or QC3.

Hi bro, what is your B180 Android security patch date and baseband version? My manual updated B180 don't have the 4G icon when connected to WiFi.

I manually downgrade to B170 and immediately get B180 OTA.
Different is, I got the release notes in Updater.

Suspect the EMUI 4.0 got problem with notification bar display. My Status Bar Calendar software do not work correctly on Mate 8. The icon display by day on notification bar never work anymore.

I have this issue once where my Sim 2 suddenly loss 4G data (set default Sim 2 data). Turn off mobile data option and on again it back to normal. You may try it.

If problem persist try reboot your phone, try wipe Cache partition by turn off the phone > press volume up + power to enter Recovery mode > Format Cache (WARNING DO NOT WRONGLY RESET YOUR PHONE).

Just to share, if you don't want to root the phone, you may use Huawei Backup to backup everything except WiFi passwords.
To backup WiFi passwords you need to use HiCloud which is the only way. If you can't find HiCloud in Google Playstore you can install the China version of HiSuit then install Huawei Market to get HiCloud.

Btw, the Huawei Music app China version let you listen free music online.

You can download and install the apk via Huawei Market.

For local set, need to install HiSuite China version, then you can install the Huawei Market, then you can get the China variants of apps including Stock Music app which allow you to listen to online music. However, no matter what you cannot login to Huawei music with you Huawei ID... So can't download songs or save Playlist...

http://consumer.huawei.com/minisite/HiSuite_cn/index.html

The WiFi passwords will not be backup.

When you backup WhatsApp to Google Drive, it will create a set of local copy in internal sdcard folder named "WhatsApp" If you hate about the long waiting of backup to Google Drive you can copy the entire WhatsApp folder to somewhere safe.

Did you backup both apk and data (need to check both option)?