I think whether it's currently unnecessary might depend on where you are and what network you're on. T-Mobile has mid-band spectrum that isn't C-Band spectrum and they've been able to deploy it sooner. They're seeing 300Mbps+ speeds on a lot of their network already. We're also seeing battery life get better fast. X50 phones were problematic. X55 phones had some degraded battery life. X60 phones seem to be doing pretty well.
I think it's easy to forget that LTE wasn't as big a jump initially as we see today. Back in 2012, T-Mobile's HSPA network scored 5.5Mbps in PC World's testing against 7.4Mbps for Verizon's LTE and 9.1Mbps for AT&T's LTE. In PCMag's 2013 testing, T-Mobile's HSPA got a similar 7.7Mbps while the 4 LTE networks got 5.1Mbps, 10.3Mbps, 13.1Mbps, and 16.0Mbps. Again, LTE networks were seeing marginal improvements. Over time as network deployments matured and new LTE releases came out, LTE's improvements went way beyond HSPA.
But the first round of LTE phones on Verizon were terrible - way worse than any 5G device we saw. Some people wanted to be a first adopter. I think waiting a generation or two gives you better results, but some people always want to be first.
I actually think the reason the US pushed LTE so quickly is simply because Verizon didn't have an upgrade path for their 3G network which was stuck in the 1Mbps range while HSPA-based competitors were pushing into the 4-8Mbps range. In Europe, carriers could delay a year and offer dual-channel HSPA service in the meantime.
LTE was still better even in the early days, but the fact that CDMA didn't have an upgrade path put Verizon in a tough place. They could either watch AT&T offer 5x faster speeds than their HSPA network (at a time when AT&T had an exclusive on the iPhone) or they could be an LTE early adopter. I think AT&T would have liked to milk their HSPA investment a bit longer (as many carriers did around the world), but once Verizon started marketing LTE they had to follow.
And you're saying that the upgrade was huge - and it certainly has been. However, it was more marginal at the start. That's not to say it wasn't a good upgrade even initially, but it wasn't anywhere near the 40-50Mbps that LTE averages today in the US. If 5G can follow a similar trajectory, we'll be able to support a lot of things we can't today.
I think it's easy to forget that LTE wasn't as big a jump initially as we see today. Back in 2012, T-Mobile's HSPA network scored 5.5Mbps in PC World's testing against 7.4Mbps for Verizon's LTE and 9.1Mbps for AT&T's LTE. In PCMag's 2013 testing, T-Mobile's HSPA got a similar 7.7Mbps while the 4 LTE networks got 5.1Mbps, 10.3Mbps, 13.1Mbps, and 16.0Mbps. Again, LTE networks were seeing marginal improvements. Over time as network deployments matured and new LTE releases came out, LTE's improvements went way beyond HSPA.
But the first round of LTE phones on Verizon were terrible - way worse than any 5G device we saw. Some people wanted to be a first adopter. I think waiting a generation or two gives you better results, but some people always want to be first.
I actually think the reason the US pushed LTE so quickly is simply because Verizon didn't have an upgrade path for their 3G network which was stuck in the 1Mbps range while HSPA-based competitors were pushing into the 4-8Mbps range. In Europe, carriers could delay a year and offer dual-channel HSPA service in the meantime.
LTE was still better even in the early days, but the fact that CDMA didn't have an upgrade path put Verizon in a tough place. They could either watch AT&T offer 5x faster speeds than their HSPA network (at a time when AT&T had an exclusive on the iPhone) or they could be an LTE early adopter. I think AT&T would have liked to milk their HSPA investment a bit longer (as many carriers did around the world), but once Verizon started marketing LTE they had to follow.
And you're saying that the upgrade was huge - and it certainly has been. However, it was more marginal at the start. That's not to say it wasn't a good upgrade even initially, but it wasn't anywhere near the 40-50Mbps that LTE averages today in the US. If 5G can follow a similar trajectory, we'll be able to support a lot of things we can't today.