Why does my phone connect to WiFi but says no internet access?

[ghost25]

****... I'd hoped to avoid this step; but, I guess that's the price we pay for relying on modern technology. Thanks for trying to help guys, much appreciated. I'll update if/when this works :/

 

[ghost25]

So quick update: I did factory reset my phone, but I'm still having the same issue re:will not connect to Internet when I connect to WiFi. I'm wondering if I actually broke something in my modem by having my RaspPi set up wrong? I'm gonna ask on another forum about that... I'll keep y'all updated. Thanks.

 

[ghost25]

So, the message on my factory reset phone reads as such:
"Internet may not be available

If you want to connect to this network without internet access, you can connect only this time or you can set your phone to always connect to it even if internet isn't available.

You can change this in Settings > Connections > Wi-Fi . ADVANCED > Switch to mobile date > Network exceptions"

with the options of

Connect only this time
Always connect
Disconnect

************************

Maybe this is my "punishment" for trying to avoid ads on my phone? Lol like "you either get no wifi or you will accept ads, and you will like it!" I dunno haha

 

[Mr Bojangles1]

Try changing private dns in network & wifi settings to Google or cloudflare. Open settings and search for private dns to find it.

 

[ghost25]

So, update: I factory reset my phone (lost a bunch of pics), but that itself did not solve the problem. Out of desperation, I disconnected my PiHole and completely reset my home network to factory settings; this solved it. Evidently, the problem was NOT in the phone, software, or anything else - it was entirely a network issue. I guess the lesson to be gathered is, before factory resetting your phone, reset your modem to factory settings. Thanks for the help guys.

 

[mustang7757]

So, update: I factory reset my phone (lost a bunch of pics), but that itself did not solve the problem. Out of desperation, I disconnected my PiHole and completely reset my home network to factory settings; this solved it. Evidently, the problem was NOT in the phone, software, or anything else - it was entirely a network issue. I guess the lesson to be gathered is, before factory resetting your phone, reset your modem to factory settings. Thanks for the help guys.

Interesting you mentioned in post #8 any WiFi u couldn't connect didn't seem to be with the WiFi network, but glad it's working

Sent from my SM-S908U1 using AC Forums mobile app

 

[B. Diddy]

So, update: I factory reset my phone (lost a bunch of pics), but that itself did not solve the problem. Out of desperation, I disconnected my PiHole and completely reset my home network to factory settings; this solved it. Evidently, the problem was NOT in the phone, software, or anything else - it was entirely a network issue. I guess the lesson to be gathered is, before factory resetting your phone, reset your modem to factory settings. Thanks for the help guys.

Glad you figured it out, and sorry you had to go through the hassle of a factory reset!

 

[dlcpa]

I get those messages all the time but I have internet access.

 

[jbjtkbw007]

Interesting you mentioned in post #8 any WiFi u couldn't connect didn't seem to be with the WiFi network........

Sent from my SM-S908U1 using AC Forums mobile app

This confused me too reading through this.

 

[406man]

I had the same problem with my S8. Exactly the same symptoms. Rebooting the phone and resetting the network settings didn't fix it. Neither did deleting the WI-FI network and re-connecting. When I looked in more deeply I found that the phone had spontaneously decided to change some network settings. Once I corrected these it worked.

It appears that the exclamation mark next to the Wi-Fi symbol is displayed because a DNS lookup has failed. The DNS lookup failure could be caused by one or more of:
- the phone's IP configuration being bad
- the DNS configuration being bad
- or connectivity to the DNS being bad

Using Settings > Connections > Wi-Fi then click on the connected Wi-Fi network and scroll down to Advanced. Here is the option to choose DHCP or static IP addressing. DHCP is normal and ought to work on pretty much every Wi-Fi network. For some strange reason my S8 won't work with DHCP on my home Wi-Fi network and I have to use a static IP address. I don't want to factory reset the phone and have decided to live with the problem. So I allocated it a fixed IP address and then you have to set up the DNSs. I use the Google DNSs whose addresses are:
DNS1: 8.8.8.8
DNS2: 8.8.4.4
...but I could use the DNSs provided by my Internet provider if I wanted. My connectivity had failed because the phone mysteriously changed itself to static IP addressing and the DNS IP addresses were bad. Once I had changed them to the DNS addresses above it all worked. As it's my own home network I can manage the IP addresses and make sure the static address is outside my router's DHCP range to prevent any duplication - which would potentially cause serious problems.