Auto-Sync Not Working on Certain Wifi Sources

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  • Updated 5 years ago
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Auto-Sync (push notification) for my Gmail, Contacts, Hangouts, Google+, etc are all set to on and notify. It works perfectly when on Mobile Data and even my home Wifi.

However when I am using my Wifi at work or at a store, the Auto-Sync (push) does not work. When I sync my accounts it will sync it, or when I go into the appropriate app it will sync, but it has to be a manual pull to get the sync to occur.
When on the work or store wifi, I agree to the applicable TOS and make sure I have a active wifi connection. I am able to surf with wifi only. It's just that the Auto-Sync does not work.

I'm wondering if they happens to anyone else or what I might be doing wrong.
I'm using the Samsung Galaxy S4 Mini. I have pulled the battery and sim; I have added and removed the Google account and even cleared the applicable App's data and this still occurs
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Dennis, Mobile Master

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Posted 5 years ago

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Steven

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Could be a bug with the S4 mini. Have you tried to look around on the internet (other sites) and see if its a known issue. I haven't heard of any issues like that. Let me know if you find anything.
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Dennis, Mobile Master

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I have done a search and couldnt really find anything. So I thought I would ask here. I do however need to expand my public wifi connections to see if it is an issue for all public wifi.

But it is still very weird that auto-sync is being blocked but pull data services run perfectly fine
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Xavier

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It's not your phone, but the wi-fi access configuration. Some wireless hotspots are blocked with different port numbers to prevent tons of access such as streaming movies and so on (at work is common).

Seems to me like you need to contact your IT department. If it doesn't work at you workplace :) they must have blocked the access. I used to work with an ISP in the USA.

This is common as well with open networks.
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Xavier

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The issue he experienced with the Android/GMAIL app was due to the firewall disallowing traffic through the ports that the 'background synch' mechanism uses.

As this is a network app, it seem quite reasonable that Google publishes a list of what ports need to be open for the app to work. I was hoping that could be provided but it is never provided. Unless, we take the time to look for them. This will solve the problem!
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Jorden, Mobile Master

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True could be a port problem, but in my experience when something is blocked, it's blocked regardless of what method you use to try to get there.
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Xavier

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Well, yes, you got a point there.

it can be a bug from the app itself.
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Dennis, Mobile Master

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I miss my iphone now :(
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Xavier

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Tell me :(
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quasarito

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If it works on the data network or your WiFi at home, then it would seem to indicate that your work WiFi probably has some network rules terminating push notification channels.

GEEK ALERT! Stop reading now if acronyms make your head go into a tizzy...

Push notifications can work by telling the server (in your case, Google) which port to send the update notifications. This can be done through direct port access if you are directly connected to the Internet, or via uPNP (or some other dynamic port forwarding protocol) if you're behind a NAT router. Your WiFi at work probably does not support (or denies) the uPNP requests.

Push notifications can also be done by opening an HTTP request and not closing it. If your work router is monitoring ports, it may be pro-actively terminating such open HTTP requests after a short period of inactivity, thus thwarting attempts at push notifications over HTTP.
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Xavier

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Finally a decent answer!
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Dennis, Mobile Master

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Arg... so much for free wifi at work if it doesnt update. Cant even setup pull updates but that doesnt work well with Hangouts anyways.

Thanks for the explanation!
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Dennis, Mobile Master

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Yet push notifications work with the iPhone.
Why would it block out my Android device only?
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Ivan, Mobile Master

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There is only basically one iOS build, but many Android builds. I've had such a variety of experiences with Android, depending on manufacturer and model.

Do you have another Android device you could test this with (preferably non-Samsung). Any co-workers with Androids able to do this?
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Dennis, Mobile Master

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Surprisingly everyone here has an iphone or a blackberry. It's an android desert. But I will try my Nexus 4 to see if a similar issue occurs
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Xavier

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Dennis a silly question.
from the notification bar is the sync option lighted up?
if it is and still having issue. You might like to wipe out your phone. kit kat is rolling out soon...

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Dennis, Mobile Master

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Good question but yes it is on

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