Asking this kind of question means that you’re probably having a tough time connecting to your Wi-Fi using your smartphone, and you’re probably experiencing some kind of issue with the SIM card as well.
That’s why we’re going to explain what a SIM card is and how it works, what Wi-Fi is and how it works, and how to connect to Wi-Fi without a SIM card. Hopefully, after reading this text you’ll have no issues connecting to your Wi-Fi.
What Is a SIM Card?
SIM (Subscriber Identity Module) is a card that contains a circuit that stores your IMSI (International Mobile Subscriber Identity) and the key that it uses to identify you as a user on your device.
You’ve probably seen it numerous times, it looks like a bit of plastic with a chip in it. The chip is the circuit that holds the number and the key. The SIM card has different features, and these include:
- ICCID: The integrated circuit card identifier is the number that identifies the SIM card. It’s usually stored on the card itself, it’s engraved, but it’s also stored in the card. Several parts to it are complex.
- PIN: The personal identification number is the number you have on your card, and you can change it whenever you’d like. There’s only one use for the PIN, it’s like locking your phone.
- PUK: The personal unblocking key is a little different because it’s used when you don’t know the PIN. Well, you need to use it when you forget your PIN to unblock and change it.
- List of services: These are the things every user can access, contact lists, calling, texting, cellular data, etc. So, this is a list of everything you can do with your SIM card.
How Does a SIM Card Work?
The SIM card connects to the network where other SIM cards are connected, the GSM (Global System for Mobiles). This is a digital network that’s used for communication in the entire world. The other network SIM cards can use is called CDMA (Code Division Multiple Access).
There’s not much difference between the two, and they work in almost the same way. You have a card that identifies you as a subscriber, you can save contacts on it, and you use it to trigger the services your network operator offers.
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So, once you make a call, the signal gets sent to the nearest cell tower, and that tower transfers the signal to the receiver of the phone call. This is a very simple definition of how calling works, but the SIM is there to trigger the services and show who’s using them.
What Is WI-FI?
Wi-Fi (Wireless Fidelity) is something we use to refer to wireless connectivity. It’s a group of protocols that we use for internet access and local area networking. We use Wi-Fi to transfer data using radio waves.
Therefore, Wi-Fi is the technology we use to connect different devices and to the internet. The most common thing we can associate Wi-Fi with is the internet access it provides. Let’s discuss how it works.
How Does Wi-Fi Work?
As we already said, Wi-Fi technologies use radio waves to transfer data among each other. It’s quite amazing when you think about it. Almost every smart device we own has a wireless adapter, the component that sends and receives these waves.
The two most common radio wave frequencies are 2.4 GHz (Gigahertz) and 5 GHz. These complement each other because 2.4 GHz covers a wider area with wireless connectivity, but it’s much slower than 5 GHz, whereas 5 GHz is faster and covers a smaller area.
Therefore, all we need for our wireless network to work is an adapter in our device and a functional router that sends the wireless signal.
Let’s discuss how we can connect to Wi-Fi without a SIM card.
How to Connect to WI-FI Without a SIM Card?
Well, now that you know how SIM cards work and how Wi-Fi works, it’s pretty obvious that you can connect to Wi-Fi without a SIM card. These two are completely independent of each other, and we’re going to discuss different ways to connect to Wi-Fi depending on the devices.
Connect to Wi-Fi Without SIM Card Android
If you don’t have a SIM card in your smartphone, simply turn it on and swipe down to get the quick-access menu. Tap on the Wi-Fi icon, and it will take you to the list of available networks. Just type the password and connect to your network. That’s it.
Connect to Wi-Fi Without SIM Card iPhone
Go to Settings and tap on Wi-Fi. Once there, just turn on your wireless. Choose a network from the list of available wireless networks. Type in the password of the network you know and connect to it.
Connect to Wi-Fi Windows
It’s more or less the same process. The only thing is that you don’t need a SIM card for laptops running a Windows operating system. Of course, there are still some smartphones that run on Windows in existence.
Just click on the network icon, and locate the network you want to join. Type in the network password and connect to it. For people that still use Windows phones, the process is much like the one with Android devices.
There’s no need to wonder how to connect to Wi-Fi without a SIM card because we don’t need one to use wireless technologies. The SIM card works independently from the wireless adapters. Every device we have that supports wireless technologies can connect to the internet without a SIM card.
We can connect assuming we know the password for the network, or if it’s a public hotspot. Finally, if you can’t connect to your Wi-Fi and you think there’s something wrong with your phone, you can check the connectivity on another device to see if your Wi-Fi even works.
Hey, I’m Jeremy. I hold a bachelor’s degree in information systems, and I’m a certified network specialist. I worked for several internet providers in LA, San Francisco, Sacramento, and Seattle over the past 21 years.
I worked as a customer service operator, field technician, network engineer, and network specialist. During my career in networking, I’ve come across numerous modems, gateways, routers, and other networking hardware. I’ve installed network equipment, fixed it, designed and administrated networks, etc.
Networking is my passion, and I’m eager to share everything I know with you. On this website, you can read my modem and router reviews, as well as various how-to guides designed to help you solve your network problems. I want to liberate you from the fear that most users feel when they have to deal with modem and router settings.
My favorite free-time activities are gaming, movie-watching, and cooking. I also enjoy fishing, although I’m not good at it. What I’m good at is annoying David when we are fishing together. Apparently, you’re not supposed to talk or laugh while fishing – it scares the fishes.