on the box from mine, bought on Amazon in Dec 2012
model 815125
sleek 4G 700MHZ band 13
band 13 is verizon *LTE
700MHZ-band 13/800/1900 MHZ cradle
this is verbatim from the box
apparently still available from one vendor on amazon
http://www.amazon.com/gp/offer-listing/B003NQ7RZY/ref=dp_olp_0?ie=UTF8&condition=all----------------------------------------------------------------------
was the Wilson trucker, your old one. or a new one for the dual band sleek
that 1.35mb dl speed is a big increase almost 4 times the speed of the nexus
that would be a big deal for me
if your phone shopping i will suggest the ThunderBolt
look around nd you will see they still command a good price
the reason is they have (2) radio chips, One for for each band
newer phones use ONE radio chip for all bands
the TB uses more power...shorter battery life, but IMO it is a better phone, with better performance
i have galaxy nexus, not sure S3/S4 , i bought it after i spilled coffee all over my thunderbolt and scrambled it