Office365 Exchange neither syncs nor sends mail over WiFi - Galaxy S 5 Q&A, Help & Troubleshooting

I've ran through a strange issue very recently after configuring an exchange account to one of my user. Well! its on his Android handset (only over WiFi and the mobile DATA works just fine) but not the PC. To make it more clear, here's what I have done;
- His PC (on LAN) and mobile (on WiFi) is on the same network. PC works just fine while phone does not.
- Another email under the same domain with another Android device (which is mine) works very well without any interruption as well as on the same network as above.
- Tried removing, adding back by clearing all the DATA and cache of the **Email** app which didn't help.
Below seen is combined screenshot of the corresponding device.
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**This sounds more like an OS issue to me than a mail or the device issue.**
Any advise or anyone solved having such similar issues, could help me on this.

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Push Service embeded in ROM

Greetings everyone,
I have a question about pushing data from an Android device to a web server.
I'm trying to setup a pilot project for a Kid Hospital where Nurse would use an Android Smartphone for monitoring / triage
I would like to have a background push service that pulls data from a custom app and send it on a regular basis to a web server (web services / api).
Apps would collect data from external sensors (via BT or USB) and then save it on device ( ??? ) and a background push service send that to the web server.
Is this possible ?
See diagram :
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Any feedback ? Please ?

Wifi connect button is greyed out

hey guys,
i am on an android 7 custom rom. since upgrading to android nougat, i am not able to connect to my university wifi. however i can perfectly fine log in on an older android version with the same login.
if i enter my login now, i cant even hit the connect button cause its greyed out.
every other network works fine. seems to be an issue with this PEAP one we use at university. i read it somewhere on the web.
any ideas?
thanks!
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You may have the wrong vendor.img installed. Update it with the correct one associated to your custom ROM. You should be good to go after.
Select for CA Certivicate "Don't validate"
Google is your friend: http://android.stackexchange.com/questions/157121/cant-connect-to-wifi-using-nougat

Google Keep Refusing To Sync (Stock Nougat)

Everything was fine and dandy until I restored my device due to an issue with it not charging correctly, now that it's fully restored I can't get Google Keep to sync on my device. It works perfectly fine with my tablet and desktop but not my phone. I've uninstalled/reinstalled it, removed/re-added my Google account, wiped the cache/data from Google Play Services and the Play Store, even wiped/restored it a second time to no avail.
If anyone has any ideas I'm open to all suggestions. I've switched to Evernote for the time being but it's just not the same.
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Do you have any apps disabled?

data service is blocked

my uncle sent me pics of his ZF3 5.5 doing this. im not too familiar with the issue. he says data isnt working at all, except after a restart, until the notif shows up again. any suggestions?
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Sent from my SM-G930F using Tapatalk
It seems that he does have internet connection since in the 2nd pic he has 3g. Try changing apn. Or take out the sim and use a different one. If the other sim works then it may be an issue with the carrier blocking his services. He can also try updating his phone to the latest version.
Try deleting some apps as well, start with the ones recently downloaded or updated. Some apps may interfere with the software or connection.
If it still won't work backup the phone and do a full reset

Apps don't work with IPv6 enabled in router.

So I've been having this issue for a while now where apps work fine over mobile data won't work when mobile is connected to WiFi.
Some such apps are-
Discord
Spotify
twitter
google keyboard gif search tool while using WhatsApp
I'd like to mention that the same apps work great on other devices over wifi. I made a thread about it last week -
https://forum.xda-developers.com/general/networking/apps-fine-mobile-data-wont-wifi-t3959012
The temporary solution that doesn't work anymore was clearing phones cache and putting it on airplane mode.
Now I was able to find a concrete solution with which I was able to replicate this bug. Turning IPv6 off in my wifi settings.
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~So do I keep the IPv6 off or is there a workaround cause from what I know IPv6 is important and it should be on.
Tl;Dr When IPv6 is on in router setting, android apps won't work. When turned off, they work great.

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