onderwerp Re: Wifi - failed to obtain ip address in Overige Smartphones

Wifi - failed to obtain ip address

nrsamsung — Mon, 18 Sep 2017 10:43:08 GMT

Dear all,

I have been using my S7 for a year. At home I always connect to my home Wifi. Suddenly since last week I cannot connect to my home network anymore.

The phone says "failed to obtain ip address". However I can see my DHCP server just tries to hand out the same IP address it always assigned to my phone:

Sep 18 11:19:22 xx dhcpd[27657]: DHCPDISCOVER from xx:xx:xx:xx:xx:xx (S7) via eno2
Sep 18 11:19:22 xx dhcpd[27657]: DHCPOFFER on 192.168.1.201 to xx:xx:xx:xx:xx:xx (S7) via eno2

I have tried to assign a static IP but then I get a message saying Internet may not be available.

The phone connects fine to other Wifi networks and other phones connect fine to my home network.

Bit stumped on this one.

Any help getting this fixed appreciated.

Re: Wifi - failed to obtain ip address

Rohit — Tue, 19 Sep 2017 14:46:35 GMT

You tried forgetting your network, and then reconnect again?

Re: Wifi - failed to obtain ip address

nrsamsung — Tue, 19 Sep 2017 15:26:53 GMT

Yes, sorry forgot to add. I restarted my DHCP server, rebooted the phone, forget and re-add the Wifi network. Same error message after every step. Its really strange it happened all of a sudden last week and now nothing I can do to make it connect to my home network.

Re: Wifi - failed to obtain ip address

BruceH — Mon, 25 Sep 2017 07:57:15 GMT

Hi @nrsamsung,

can you try resetting your router and changing the channel the router uses? You can use an Wifi analyzer to see which channel is best for you.

Re: Wifi - failed to obtain ip address

nrsamsung — Mon, 25 Sep 2017 13:03:26 GMT

Hi Bruce, thanks for the suggestion.

Yes I tried that already. I tried creating a new network on my router. The router (a bunch of Airport Extreme routers scattered throughout the house) has an option to create a separate 5 GHZ network with a new name. So I tried that, but I get exactly the same error on the new network as well.

I then created a guest network using that feature on the Airport Extreme with a new different name and new different password, but again exactly the same error (I think in this case the Airport Extreme is the DHCP server as I don't get anything in my logs).

Re: Wifi - failed to obtain ip address

Rohit — Tue, 26 Sep 2017 07:22:10 GMT

Then it's time to backup and reset!

Backup en reset:
http://www.samsung.com/uk/support/skp/faq/1109470