problem of sudden wifi with iphone 4S

Hello

a few days ago, my iPhone 4S does not receive more an IP address from a DHCP server, even for all the WIFI networks, with that I use for work.

WIFI authentication is OK, but is never received from IP (or other information received from the DHCP server).

Someone at - he already experienced this?

Any idea?

Already used the 'forgotten network?' and enter the parameters for connection a couple of times, same result.

Thank you very much

Dominique

Hi dofas,.

Here are a few troubleshooting steps for the problem you are having with your Wi - Fi connection.  I've highlighted some key information.  Click on the link for more details.

If your iPhone, iPad or iPod touch connects to a Wi - Fi network
https://support.Apple.com/en-us/HT204051

Still not connect?

Reset your network settings. Tap Settings > General > reset > reset network settings. This resets also Wi - Fi networks and passwords, cell parameters and VPN, and APN settings you used before

  • If you are connected to a Wi - Fi network, but you can't get online, try to use your Wi - Fi network on other devices. If you can't get online using your other devices, there could be an interruption of the service. Call your internet provider cable or the assistance company.
  • Try to connect to a Wi - Fi network in a different location. If your device can connect, you will need to get help with your Wi - Fi network. If it cannot connect to Wi - Fi networks, contact Apple.
  • Update your Wi - Fi router with the latest firmware and check that the router supports your Apple product. For more information, contact the manufacturer of your router.

Recommended settings for the WiFi routers and access points
https://support.Apple.com/en-us/HT202068

DHCP

The DHCP Dynamic Host Configuration Protocol () assigns addresses that identify devices on your network. Once awarded, devices use these addresses to communicate with each other and with computers on the Internet. The functionality of a DHCP server can be considered similar to a telephone company distributing phone numbers, that clients then use to call other people.

Value: a single DHCP server by network

Details: There is only one DHCP server on your network. This DHCP server can be integrated into your modem cable or DSL, a stand-alone, or integrated into your router Wi - Fi router. In all cases, only one device should act as a DHCP server on your network. If several devices has activated, you will probably see to address conflicts and issues of access to the Internet or other resources on your network.

Take care

Tags: iPhone

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