IMO, T-Mobile is pretty conservative with backhaul for most of their sites. Not to the point where it’ll start causing congestion issues, but I haven’t seen peak speeds at quite the level as I have on other carriers. Likely something to do with them not being in the wireline business. That said, I was testing during rush hour and the engineers may still be working on optimizing these sites. AFAIK LTE-LAA was turned on in the past couple of days (plus they're the first non-macro sites in the city that I, personally, have seen LTE-LAA deployed on) and it was running at super lower power. Additionally, these oDAS sites are pretty limited on antenna diversity. I’ll have to check again, but I believe B46 was running in SISO mode on some nodes. It's really pretty interesting how different the approach is in every neighborhood. Where I predominantly map (135 to 155), small cell density is pretty staggering - by my count, 22 new nodes have been activated in the past year and a half. The small cell count in East Harlem (specifically 100-110) is equally impressive - I've mapped 10 new nodes in the area over the past 9 months. That said, other upgrades seem to hit Harlem more slowly. On the other hand, places that I first mapped 2-3 years ago (ie. the East Village and Crown Heights) still have next-to-no small cell roll-out. Here's hoping the roll-out begins to become a bit more ubiquitous over the next year or two. So much congestion and spotty service in areas that small cells are made for, but T-Mobile hasn’t built out as dense. Carroll Gardens, Cobble Hill, Brooklyn Heights, Downtown Brooklyn, DUMBO, Red Hook, and even Gowanus - just off the top of my head. Hell, I haven’t been able to run a speedtest at the Smith-9th St station for three years. Posted on Reddit about this a couple weeks back. Not just happening in the city. I understand why split eNBs exist when site upgrades occur - there typically have to be alterations to the BTS to allow all bands to operate under a single eNB ID. Sometimes the BTS isn't upgraded at the same time as the antennas, which means that you're stuck with split eNBs for several months. However, this seems like a conscious choice. Sites that were previously broadcasting over a single eNB now have split eNBs without any upgrade to the antennas. Would really like to know the purpose of this, myself.