Yes. You should try to buy a local SIM card; otherwise, the roaming fees could get pretty high.
You can buy a one touch cell phone with an unlocked sim card , trying Ebay would be your best bet .
Most cell phones are manufactured to be used on one specific cellular network. An unlocked cell phone is one which is not tied to any one cellular provider. When a phone is unlocked, it means it can be used on any network. The tricky part is that only the phones with SIM cards can be unlocked. You cannot use an unlocked phone with Verizon Wireless and other non-SIM networks. Currently, T-mobile and Cingular are the two networks in the United States that accept unlocked phones. Be sure to check your network before purchasing an unlocked phone, as they are very expensive and usually not returnable.
One can find an individual unlocked Sprint cell phone in classified ads. There are kiosks and stores that specialize in unlocking products for a fee.
One can get a cell phone unlocked by first pressing a button on the phone. Once pressing a button, the screen will turn on providing simple instructions on how to unlock the screen. For example, "Click back then space to unlock the screen."
There are man websites that rent cell phones in Europe. Among them are Europe-Cell-Phone, CelloMobile, CellualarAbroad, OneSimCard, Telestial, and CellHire.
You have two options when it comes to buying an unlocked cell phone. First option is to find one on Craigslist.com, just choose your city and type in the desired phone plus the word unlocked. The other option is Ebay.com, search for desired phone pluse type jailbroken or unlocked.
Unlocked GSM cell phones should work with any provider. You will be able to tell one the sim card is put in the phone.
You can find unlocked cell phones at several places. I have noticed sites like walmart.com offer cell phones for cell that are unlocked or restricted. They can be used with a cell phone provider of your choosing. You can also purchase a used or refurbished unlocked phone. These can often be found locally at an independent cell phone store (ie not one of the national cell phone provider chain stores). Check into the items warranty, so you will be able to return it if a problem arises.
You should be able to get a good used unlocked cell phone from any store that specializes in cell phones. They are hard to come by but you can find them. Another way is you can try craigslist and see if anyone has one on there and make sure it works before you leave.
Amazon, Overstock, eBay, Newegg and the Motorola companies webpage or stores would be the best places to purchase an unlocked smartphone. The only way to know for sure any cell phone is unlocked is to buy the phone in person.
Unlocked cell phones can be found in Great Falls by searching the cell phone section on Craigslist. In addition, these phones can also be purchased through retailers such as eBay, which can have them mailed to Great Falls.
As long as one can obtain a SIM card from any cell carrier, an unlocked mobile phone can be used on any carrier. Also, if one is travelling overseas and obtain an international SIM card, calls can be made much more cheaply.