If you are having slow 3g speeds, try doing a *228, option 2.
For those who don't know, it re-scans and updates your phones local tower list so you get the best connection. I recently did one and saw a huge boost in 3g connectivity.
Nexus 7 (2012) 16GB (rooted + unlocked 4.4.2... mmm KitKat)
Verizon Samsung Galaxy S4 - 4.3 stock
"Look pal, I'm an engineer.That means I solve problems. Not problems like: what is beauty? Because that would fall within the purview of your conundrums of Philosophy. I solve practical problems!" ~ Dell C.