I'll be going away in a couple of days, and I believe that where I am going, the WiFi is restricted to one device being connected at once. However, I would like to have internet access on both my iPhone and iPad Mini. Is there any way I can connect to the internet through my iPad Mini or vice verse, without a jailbreak?
iOS devices can not relay WiFi signals to other devices (at least not without a jailbreak). To share a single WiFi login with several devices you need to set up a WiFi repeater. Airport Express is one device which can do that, D-Link 505 is another one which I have successfully used for this purpose.
Just had the same issue in my hotel in the Dominican Republic, where I enjoy a great snow-free christmas. The hotel locks the DCHP to the MAC address of the first device that connects, thereby limiting usage to one device per paying customer--they think.
Just note the MAC address belonging to the wi-fi adapter of your first device and then you can soft-set that for each of your other MacBooks, Windows laptops or what have you. In OS X you can use…
sudo ifconfig en1 ether <your first device's MAC address>
…and then you are good to go. Turn wi-fi off on your first device. It's not perfect, but at least you do not have to pay multiple fees.
Use iPad mini as a personal hotspot.
From Apple Where supported, iPad mini can share its high-speed data connection as a personal hotspot.
You can connect up to five devices — such as a MacBook Air, an iPod touch, or another iPad — over Wi‑Fi, Bluetooth, or USB.
Share an Internet connection: Go to Settings > General > Cellular and tap Set Up Personal Hotspot —if it appears—to set up the service with your carrier. After you turn on Personal Hotspot, other devices can connect in the following ways: • W-Fi: On the device, choose your iPad from the list of available Wi-Fi networks.
As @Patrix pointed out, it all depends where your "source" wifi comes from.
There is always a BUT :)
But, since you think you can get only one WiFi connection in the place you are going, try Boingo, to see if they have something there.
In my case, when the hotels are trying to rip me off (like $20 per day for internet use), I use my unlocked phone, go to local store and buy a SIM with Internet for cheep.
Most hotel/resort captive portals require you to pay for each device that is connected to the WiFi, if you want access to the outside world. It is more than likely possible that you could pay twice, (Onnce for your iPad, once for your iPhone) and get the same results..
Spoofing the MAC address on one of your iOS devices is non-trivial and would require jailbreaking. Also, to have two devices with the name MAC on the same network at the same time will cause problems. Simultaneous use is out of the question - in fact you will need to turn one device off in order to use the second device for any period of time.
Also.. will you have a cellular data connection? Can the iPhone continue to use this data connection, while you iPad uses the WiFi?
I know that none of the above actually provides you with the answer you were looking for.
Sharing internet connection from one iPhone to another works well if one of the iPhone has a valid Data Simcard with internet and personal hotspot is turn on. Once you have done that turn on the wi-fi on the other iPhone that has no internet and let it search search...once detected connect it, that's it. It works well for me and my friends.