unable to use apps when on wifi

[Anonymous]

Since the marsh mallow upgrade on my S6,everytime i connect to the internet and try and use facebook app,keeps saying no internet connection,wasnt like this before the upgrade to marsh mallow,so im constantly having to use the app on my data allowance even at home or at work,which is eating into my monthly data allowance big time,no other app appears to be affected,i have unistalled and reinstalled the app,factory reset my phone several times and this makes absolutely no difference,is there anyone on here that can shed some light on this or know of a solution to fix it please.

[gindygoo]

Have you checked a settings box saying to use over mobile data only? Either on the app itself but more likely in phone data settings?

[MI5]

Is this on every wifi connection or just one?

[Anonymous]

its on evey wifi connection,but sometimes it will connect and not be a problem,but more or less it wont connect via wifi.

[Anonymous]

also MI5 can you tell me where I'm meant to be looking for this setting?? please

[gindygoo]

So if it's connecting intermittently then maybe it's a problem with the app.

Do Facebook have some sort of "contact us" online form? It might be worth checking with them to see if there's a known fault?

[gmarkj]

Is it every app that won't use the wi-fi, or just facebook?
If every app that suggests either a problem with the wi-fi itself (as if there is no internet connection the phone will refuse to use it) or a problem with the phone's wi-fi.
Have you tried connecting anything else to it? Does that work or not?

[Bambino]

Have you tried to 'Forget' all the WiFi connections you use and reset them?

[gindygoo]

"also MI5 can you tell me where I'm meant to be looking for this setting??"

I thought it might be a check box in your data management settings. The same place you can stop apps updating over mobile data. But as you've said it's intermittently working then it sounds more like some sort of glitch. 

[Anonymous]

yes I have already done this several times,but its updated the app several times already,which makes me think its the phone,this was never a problem till marsh mallow updated the the operating system,this is when all my issues have started.