post the model number of the sleek
some one will look it up and give you the info
mine is the sleek 4G-V 700/800/1900 mhz, model 2B515
IIRC LTE is in the 700mhz band NOT the 800mhz
http://www.phonearena.com/news/Cheat-sheet-which-4G-LTE-bands-do-AT-T-Verizon-T-Mobile-and-Sprint-use-in-the-USA_id77933Verizon Wireless
Verizon Wireless was the first to arrive to the 4G LTE race and it has also built its nationwide network based on 700 MHz spectrum, but the primary band for Verizon is band 13. Bands 2 and 4 are used to strengthen the signal in the densely populated urban areas. One important thing to note about Verizon Wireless is that many phones are built specifically for the carrier, including its 4G LTE bands.
800mhz is used mainly for 1xrtt and 1x-evo
1700/2100 is the XLTE dual band use
VoLTE aka voice over data is in there someplace for video call support on android, i think that is in the 700 bands
there is some re-allocation of 800mhz bands for LTE support has CDMA is phased out and phones are removed from the network
