Unable to detect home wifi on laptop and mobile phone

[irenetang87]

I bought a new modem as my previous modem already spoiled as stated by the technician of my service provider. I have 3laptops and four mobile phone previously before the modem spoiled are able to connect to my home wifi but after i changed new modem, only one laptop and 2 mobile phone able to detect the home wifi. The 2 other laptop and 2 other mobile phone wasn't able to detect my home wifi in the wifi available list. I don't know what should I do to solve this isuue.

 

[bootcher]

Are they older devices? Maybe your new router is set to a newer Wifi standard and the older devices are unable to connect through this new wifi standard. There should be an option in your new router to support older devices, for example "b" or "g" devices.

 

[irenetang87]

Are they older devices? Maybe your new router is set to a newer Wifi standard and the older devices are unable to connect through this new wifi standard. There should be an option in your new router to support older devices, for example "b" or "g" devices.

One laptop using window xp and the other one using vista. As for the other two mobile phone are smartphone Huawei Y3. If there is such option/setting, mind to lead me how to solve?

 

[bootcher]

You need to configure your router through the web interface. Read the manual on how to do this, there are thousands of different models which work different. You can also try to use this guide:
http://www.howtogeek.com/168379/10-useful-options-you-can-configure-in-your-routers-web-interface/

You will want to change the wireless method option to support older devices also (b and g devices).

 

[FALC0N]

Who is the ISP?

There are three standard that could have broken compatibility.

1) The wifi standard itself. I'm guesting the old router was configured to support 802.11b or g, and the new one isn't. The older devices don't support the newer standard and don't see it.

2) it could be the encryption. A lot of XP era devices didn't support WPA2.

3) if the router is dual band, but is only broadcasting 5ghz, older devices wouldn't be able to see it.