3G coverage on a cell phone is the internet that your phone runs off of. Almost all cell phones offer 3G coverage. But nowadays, most smart phones now have 4G coverage.
I am not familiar with this type of phone, but my initial search didn't come up with a clear answer. I suggest you visit their website to view all of the cellphones they offer: http://www.uscellular.com/uscellular/cell-phones/showPhones.jsp?type=phones&_requestid=100450
Typically any time a cellular store runs a sale, they will offer phones anywhere from free to hundreds of dollars. You can also find affordable used phones on cragislist and ebay.
Most cellular phone plans offer low end cellular phones as part of a package. You could also look into buying previously used or refurbished phones and having them put on your plan.
Verizon has great coverage. AT&T isn't bad either.
Sprint stores sell phones and accessories and offer their own phone network coverage. They also sell GPS navigation systems, music downloads and offer repair services.
Most cellular providers offer Nokia mobile phones, however depending on the model you want it may be exclusive to a certain carrier. For some examples of current Nokia phones you can visit their website at www.nokia.com
Vendors who offer cellular phones generally offer them unlocked so that you can use the service of your choice. If you buy a cell phone from an individual, you can find instructions online to unlock it.
Anycool cellular phones offers basic calling, texting, and picture messaging. They also offer internet connectivity to some of their models. It is almost the same as a regular cellular phone, but not as good.
Cellular One offer a lot of services, including cell phones and also wireless services. Different companies operate under this name. AT&T and Verizon are examples of this.
4 Cell phones offer discounted prices and it is a one-stop shop for all your cellular needs.
They offer all sorts of phones. even I-phones I would go in to a local place and check it out. I have heard that their customer service and coverage area are somewhat spotty however.