Originally Posted by Domush
I'm using an at&t sim in this phone but it won't use their lte. Is it possible to enable their band on the Verizon chipset? Is the chipset simply software limited or is it a completely different chip?
I'm wondering if flashing the AT&T modem is an option.
Never flash another modem from another carrier. By searching this very topic you will see that you may not get a signal again after trying, or a brick.
Also no. Radios on hardware level don't support the att frequencies and bands for their lte. Att lte uses 700 and 1700 for the freqs with bands 17 and 4 respectively. The schi605 only has lte for 700 mhz on band 13.