You don't need a SIM card and cellular service to use most features of today's iPhones and Android phones. Most apps and services run just fine as long as you have access to WiFi, and you can even set up a free
Without a SIM card, a GSM phone won't be able to tap into any mobile network. The card holds all the critical information. By comparison, CDMA carriers keep a list of all phones that can use their network. Phones are tracked by their ESN (electronic serial number) so they don't need SIM cards.
You don't need a device containing a SIM card, nor be close to a cellular mobile network tower, to make a phone call. This makes Wi-Fi calling a perfect option for mobile or remote staff. Regardless of where they are in the world, they can make calls back to your U.S.-based office at no additional charge.
Without a SIM card, you will not be able to send or receive text messages through the cellular network. This is because text messages are sent and received via a cellular network, and a SIM card is required to connect to the network.
After activating your iPhone, feel free to remove the SIM card and continue using your phone for everything except texting and calling through a cell phone carrier. As long as you're connected to Wi-Fi, you're able to browse the internet and message people through apps such as WhatsApp and Facebook Messenger.
Without a SIM, you can't do WiFi calling because you don't have any phone service at all. You could use an app and a service like Google Voice to place calls to actual phone numbers, or FaceTime audio to call other FaceTime users.
Call your current carrier to ensure your phone is not locked to another carrier, or help to get it unlocked. Purchase a SIM kit from the carrier that's right for you. Follow the SIM kit instructions to activate the phone.
You need a SIM to activate the phone. You need an active SIM with the ability to send international text messages to activate iMessage and FaceTime. Other than that, you can use the phone on WiFi.
SIM cards allow a mobile user to use this data and the features that come with them. Without a SIM card, some phones would not be able to make calls, connect to internet services such as 4G LTE and 5G or send SMS messages. SIM cards are removable and have anywhere from 32 KB to 128 KB.
An inactive SIM card usually expires after approximately 90 to 180 days. Once a SIM card expires, the associated phone number may be given to someone else, and the user may lose any balance or data stored on it.
Designed initially to access mobile phone networks, a SIM card authenticates the subscriber and ensures the user is accurately billed for used airtime. The SIM also stores your phone directories, messages, information on roaming across different networks, and many other value-added voice and data services.
It is not possible to make a traditional phone call without a SIM card as the SIM card is required to connect to a mobile network and make calls. However, there are alternative ways to make calls without a SIM card online, such as using internet-based calling services like KrispCall, Skype, or WhatsApp.
2 Answers. Yes, a Sim Card is not required to use Whatsapp. Whatsapp doesn't use your network provider to function as text messages do. Text messages require a Sim Card to recieve the message to your phone number.
How Much Does Wi-Fi Calling Cost? In most cases, Wi-Fi calling does not incur any additional costs. Most cellphone providers will treat Wi-Fi calls the same as any other call and deduct those minutes from your cellphone plan's allotment.
You can get your free Indian SIM card in the official stores of Jio, Airtel & VI (Vodafone Idea). BSNL sells them for up to 50 INR, depending on the type of SIM card you need.
Buying a sim card in Australia
Once you've worked out if your phone is compatible, buying travel sims in Australia is easy. You can buy a sim card overseas before you leave and have it shipped to you, or buy one at the airport or at the provider's stores.
A replacement SIM lets you move your number to a new SIM if your old SIM is lost, stolen or damaged, or if you need a different size SIM for your new device. A replacement SIM can take up to 24 hours to activate in busy periods, however it's usually much quicker.
Pro Tip: In a nutshell, you simply need to select your Apple ID under Settings > Messages > Send & Receive to send messages over Wi-Fi without a SIM card. Even if you see Waiting for activation, you can send and receive messages via your Apple ID.
iPhone 13 devices purchased from Apple do not have a pre-installed 5G SIM card and are recommended to be activated with an eSIM (electronic SIM card). 5G Devices purchased from Verizon include a pre-installed 5G SIM card.
The app is not connected to your phone number, so you can use it on devices such as tablets without needing a SIM card.
If you have an Android phone without service you can still send text messages with WhatsApp, Google Allo, Facebook Messenger, GroupMe, LINE and many more, all by just using WiFi. Millions of people use WhatsApp every single day.
There are many popular VOIP Apps like WhatsApp, Google Voice, TextNow, Telegram and others which can be used to send text messages and make voice and video calls. Perhaps, the most popular among these is WhatsApp, which allows its users to make free Voice and Video Calls to anyone, located anywhere in the World.
With Wi-Fi Calling, you can make or receive a phone call if you have a Wi-Fi connection in an area with little or no cellular coverage.