Originally Posted by Proxy638
the point is that I want to enable 4G on those frequencies.
If I'm not wrong they should be compatible but for they are being blocked off by software means?
Your wrong, the Sprint S4 does not have those LTE frequencies. You can only receive LTE on the frequencies that the Sprint S4 supports and it doesn't support the AT&T, Tmobile, or Verizon LTE frequencies. If you are going to use the Sprint S4 on those networks you will only get 3g, edge, or maybe HSPA+ if you have the right APNs installed. If you want to use LTE on those networks you should buy a phone for those networks.
Phones & Tablets: Galaxy S4, Galaxy Note 8", Evo 4g LTE, Evo 3D, Acer Iconia A500, Samsung Galaxy Tab 2 10.1, Ipad 2, Nabi 2,
Rom: Rooted Stock Odexed, Hotspot Mod, Xposed, Wanum