Accordiing to ATT the LTE which stands for "Long Term" Evolution will not be fully implimented on any carrier until around 2014. The other carriers are now switching to LTE phones which will only have spotty coverage for a couple of years. ATT has the interim HSPA that will now give ATT phones full near 4G coverage until the LTE is fully implimented. ATT phones will have some sort of higher speed coverage now while the other carriers will have spotty coverage for a while. The reason that ATT is purchasing T-Mobile is to use their existing GSM network as the ATT HSPA network while they convert their network to LTE over the next couple of years. All other carriers will be stuck on 3G until they get LTE.
This is typical misinformation from AT&T. AT&T still hasn't even rolled out 3G over their entire network (after nearly 8 years!). Verizon will have their LTE complete in 2013. Verizon will have LTE complete in almost 200 markets by the end of this year. This will cover 85% of the American population in just 6 months from now.
AT&T will have LTE out in 12 markets by the end of 2011. And they will start selling LTE devices this year so people in those 12 markets can use it.
I'm not sure what you mean that everyone will be stuck with 3G when AT&T is fully implemented. Sprint and Verizon are already way ahead of AT&T on their 4G rollout. Currently, AT&T is scheduled to be the last carrier to complete their 4G network. And if we use AT&T's 3G deployment as a means of indicating future performance, then we can all safely assume AT&T will be the last carrier with a full 4G network.
AT&T's HSPA+ networks are a great bridge standard for them. They just need to fully deploy it now. T-Mobile is way, way ahead of them. 150 cities vs. AT&T's 50 cities. Heck, Verizon has more LTE cities than AT&T has HSPA+ cities. The problem for AT&T customers though is that they are not being transparent and open that their 4G phones will not work on LTE.
If you live in Dallas and bought a Motorola Atrix this month that is labeled a 4G phone, then LTE gets turned on next month (as scheduled) and you cannot use it, you are going to be one unhappy camper. And justifiably so.
I'm not picking on AT&T only. All the carriers have their issues. I'm for all of them opening up, being honest and delivering a quality product, as we consumers are shelling out big bucks for. And the Infuse/Atrix LTE fiasco is going to qualify as the blunder of the year in the industry. Although, they will have to compete with Sprint for their woefully slow WiMax rollout. Who will win (or lose)? Stay tuned.