O2 wifi hotspots not working

Are you trying to just connect to wifi to access a local network or are you trying to access the internet? If you just want to connect to a local network, maybe to access other devices on the network, you would need a router broadcasting the network that all the devices connect to. If you are only trying to get access to the internet, consider purchasing a hot spot device. It will provide cellular type service and will broadcast a wifi signal that you can connect your tablet or other devices to for internet access. Hot spots will cost you a monthly fee for the service and you will have to purchase the device itself. Another possibility is to use your cell phone as a hot spot and tether the tablet to it. Just remember whatever data you use on your tablet will be charged to your data plan on your cell phone. On my nexus 5x phone, it's fairly easy to turn on (settings, under wireless and networks select more, select tethering and portable hotspot, turn on portable wifi hotspot, set a password if you want to). Once turned on, the phone will broadcast a signal that you can connect other devices to for internet access. Some cellular providers don't allow tethering. If that is the case with yours there are some apps that will still allow you to set up tethering such as AndroidTethering or Easy Tether. In the past, I've had some trouble connecting wirelessly using the apps and found that using USB tether options worked better for me.

Theres only three ways to connect to the internet depending on the iPad you have.

Wifi
4G (If you have a 4G iPad)
Hotspot from your phone. Most phones can share your data and create its own wifi network, sharing it to your iPad.

I also had the same problems in my laptop, but I had tried many ways, this problems couldn't be fixed. A friend told me maybe I need to reintalled the system. However, I didn't want to do. Finally, I tried to use other wifi software. A program named OSToto Hotspot can run. You can have a try!
http://www.drivethelife.com/free-wifi-hotspot-creator.html

I have our laptop and xbox running off phones hotspot. what I did was go on your phone to the configure wifi hotspot. make sure u configure wifi hotspot first.it will ask for a network name, then password. I picked out my own then saved it.on my phone it shows phone wpa2 psk portable wifi hotspot. then u will click on wi fi hotspot should read portable hotspot phone active. now go to laptop look under the wireless internet should show a list of available networks. u should c the one u created on your phone click

The DNS info is provided via DHCP which is given out by the hotspot. You may want to A) try and simply reboot the phone and B) go into your settings > wireless and press and hold on the hotspot SSID (wireless name) and forget it. Then re-connect. Otherwise I would say it's an issue with the hotspot.

If you need to check any DNS query for website visit the site WhoisXY.com .

Try to use this program to help you! My laptop can't turn on hotspot not long ago. And a friend sent me a program, which help me turn on WiFi hotspot on laptop!
Top 3 Ways to Create Build Set up Free Wi Fi Hotspot on Windows 10 8 1 8 7...

you can use lg optimus p500 to tether wifi through usb tethering and portable wifi hotspot.

goto settings,wireless&network settings,tethering &portable hotspot and select it.

now you have to have a data plan working on your phone.

tick the portable wifi hotspot submenu and configure it.

now search for wireless connections from your laptop and you can find your mobile wifi hotspot and you can access the internet through it

Please make sure that you have data enabled on your phone!

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o2 GPRS settings:
O2 GPRS settings (WAP):
Note: Different settings for contract and PAYG (Pay as you go)

Homepage: http://wap.o2.co.uk/
APN address (contract): wap.o2.co.uk
APN address (PAYG): payandgo.o2.co.uk
Gateway (IP) address : 193.113.200.195
Username : o2wap (contract) / payandgo (PAYG)
Password: password
Session type: Continuous / permanent
Authentication: Normal
Security: Off
Port number: 9201
O2 GPRS settings (Email/Web):

Homepage: http://pda.o2.co.uk/
APN address: mobile.o2.co.uk
Username: mobileweb
Password: password
Session type: Continuous / permanent
Authentication: Normal
Security: Off

Email servers (POP): mail.o2.co.uk
Email servers (SMTP): smtp.o2.co.uk
DNS Servers: 193.113.200.200 and 193.113.200.201

Orange GPRS WAP settings:
Orange GPRS settings (WAP):

Homepage: http://orange.multimedia/
APN add. (Contract): orangewap
APN add. (PAYG): paygwap

Gateway (IP) address : 192.168.71.35
Username: Orange
Password: Multimedia
Session type: Continuous / permanent
Authentication: Normal
Port number: 9201 (or 8080)
Orange GPRS settings (Email/Web):

Homepage: http://orange.multimedia/
APN address: orangeinternet
APN add. (Old PAYG): payginternet
Username: user
Password: pass
Authentication: Normal

Email SMTP server: smtp.orange.net
Prim. DNS Server: 158.43.192.1
Sec. DNS Server: 158.43.128.1

wifi should be simple. Go to the wifi screen (depending on the OS you have) normally its in the bottom left hand side of the screen. Click that and ask for it to search for local wifi. Make sure you have a wireless modem or a wifi hotspot near you and if wireless router is Wep encrypted then you will need to get the right config for it.