CELL PHONES OR MOBILE PHONES ARE BASIC CONVENTIONAL PHONES,  http://www.aldine.k12.tx.us/cms/ImageUploads/cell-phone.jpg

They are useful for calling and text messaging.  They are void of internet facility and  application downloading facility.

They are used as Prepaid or No Contract  Cell Phones.

Price: $10 onwards  as per needs and brands

By clicking the web links below, detailed wealth of information can be had:

http://www.ehow.com/list_6700332_different-types-cell-phones_.html

http://www.pcmag.com/slideshow/story/305378/the-best-laptop-and-cell-phone-pairings

http://www.webopedia.com/DidYouKnow/Hardware_Software/smartphone_cellphone_pda.asp

Regarding the prices and for immediate order, Amazon.com link can be used.

For every day updated price information, sale promotion,etc., Amazon.com can also be consulted.

NOTE: HOW TO ORDER FROM AMAZON.COM

IN GENERAL, ANY ITEM CAN BE ORDERED FROM Amazon.com USING THE FOLLOWING LOGO: