@JGoldman10,
Are you asking about brands of cell phones?
LG, Apple, Samsung, Rim, Palm, Nokia, Toshiba all make phones that can access the internet. There are a few that make phones without that capability.
Or brand of providers?
ATT, Verizon, T-mobile, Boost, cricket, Virgin etc..
http://www.phonedog.com/cell-phone-research/companies/
All providers seem to allow net access.