First you need a card (cell phone card) to have a cell phone with the company. If you don't then it's just a "fake cellphone" and you don't want that, you want a real one.
It really depends on the cell phone company you have some don't let you change and some do. I would advise you to contact your local cell phone company.
Yes, they can if you get the right company and plan.
Verizon wireless, Sprint, and ATT
All you need is a data plan and a cell phone that can do it. haha. So you you can't regard those. You may need a site with wi-fi connection.
The data plan attached to your cell phone has nothing to do with the phone. Rather the provider, call your cell phone company and they will be able to give you the proper answer.
You cannot use ITIN to get a cell regular phone plan. The ITIN is only for tax purposes. You can form a corporation to get EIN that works like an SSN but for companies and get cell phone plan for the company.
You can call your local phone company to set up a small business phone system and plan. Or you could get a cell phone business plan if that suits your needs better.
The best cell phone plan is the one that gives you exactly what you need at the absolutely lowest price. Since everyone's needs are different, it pays to carefully compare plans before signing a contract. Every cell phone plan has its own set of benefits and drawbacks, and you need to find the cell phone plan that has the most advantages for you. If cost is an issue, then only select the services you need.
When you buy a cell phone you also need a company to provide cell phone service to that phone, so yes, you will need a plan in order to receive cell phone service. However, there are two kinds of plans. One that requires a contract and one that is called the "pay as you go" or "prepaid" plan. So you do not have to have a contract when you buy a cell phone.
You do not need a data plan for a video cell phone. If your cell phone also has a WiFi conneciton you can view online video from the WiFi connection
When trying to pick a cell phone company there are many factors to take into consideration before you choose the best value for you. First, you need to select between pre-paid and contract cell phone plans. If you are someone who does not use a lot of minutes, or does not need to have the latest and coolest phone, pre-paid plans can be best for you. If you decide on a contract plan, you need to be sure to compare the plans from each company rather than going on your impulse based on which one has the best phone. You will be stuck paying for this plan for 2 years or more so you better be sure it is one that you can actually afford!
The best family cell phone plan would be by Sprint. They have the best prices. And no, you don't need to set up a business plan.