The only real ways to get SP on Soldier Front is to earn it by ranking, winning events and opening or buying certain items.
by playing good and using sp bombs
no sp hack, everything you've heard are all lies
YEA but im not sure if they are patched
why you want to hack when you can just play you noobs
Every time your SP bar fills up, you get 10,000 SP. Some items/accessories bought with G-coins can give you SP. Some days, whenever you finish a battle, you get extra SP.
SOME WORK AND ARE TRUE LIKE THE ONE GUY ON ijji THE OTHERS ARE LIES
You do NOT get free G-Coins in Soldier Front. That is merely said to lure "noobs" into rooms that are usually hosted by a pro that is ready to own you and up their stats/exp/sp etc.
By getting more kills.
It is up to you to decide which one is better. Combat arms has better graphics and is more realistic while soldier front has better game-play. People who play soldier front will say that soldier front is best and people who play combat arms will say combat arms is best. Infact, there are many more games like combat arms and soldier front that copy counterstrike. Cross Fire is an example.
changing password in soldier front
There is no g coin hack in soldier front
just google it. or go to www.ijji.com for their website and click on soldier front