My carrier, Sprint, has a lot of weak 4G coverage. In areas where I only have one 4G bar, the internet doesn't work. Every connection times out. However, these areas often have moderate-to-strong 3G coverage. In these situations, I would prefer to connect to the 3G network instead of the 4G one. Is there a way to disable just the 4G connection? I am looking for a solution in ether the stock Samsung OS shipped with the SGS3 or in CyanogenMod.