I tell you now IT DOES NOT USE HSPA antenna for LTE. LTE has it's own antenna... The Nexus 4 uses the SAME logic board as another LG device that is LTE certified and low and behold it has 1 more antenna than the Nexus 4 has... Why is that? - Tidbits
I tried responding to an older thread that tidbits gave some false info about. I wanted to inform the people on this forum the truth about LTE capability on the Nexus 4.
I am so sick of reading your hogwash that I had to sign up for these forums.
1) The Nexus 4 LTE DOES share use with the HSPA antenna
2) this is verified by several XDA members, and someone at tom's hardware was able to achieve 2x2 MIMO, meaning that the only way to achieve 2x2 MIMO is to have an LTE antenna
3) The Nexus 4 uses the same logic board as the Optimus G, WHICH BTW DOES share SOME LTE bands with its HSPA antenna
4) Do your research before spitting this misinformation on the internet. You should read the service manual (specifically the schematics) which proves all of the above
Some helpful links
xda-developers - View Single Post - »All LTE Discussion«
(Service Manual)EN_LG-E970_…pdf (72,84 MB) - uploaded.net (service manual for e970)
LG E970 Eclipse for AT&T cruises through FCC approval (e970 sharing LTE band 2 and 5 WITH HSPA antenna)
Samsung Galaxy Note 2: Big enough for everything (except SVDO) - Sprint 4G Rollout Updates (Note 2 with HSPA and LTE band 25 antenna sharing)
HowardForums: Your Mobile Phone Community & Resource (confirming 2x2 MIMO and antenna sharing on Nexus 4)