iPhone 2G-4S do not support the 1700MHz band, so you will not be able to utilize the T-Mobile 3G/4G network, also being in the "Coverage Area" doesn't necessarily mean you actually will get to enjoy T-Mobile's 1900MHz refarmed coverage because if there aren't enough towers, then you will definitely be limited again because 1900MHz also has lower building/distance it can penetrate/cover per tower.
Speaking of colorado, I was in colorado springs back in 2010 and using AT&T (Straight Talk) at the time, sadly I did experience extremely spotty coverage, it seems T-Mobile & AT&T have poor coverage in that area, but its been 2 years so I'm sure AT&T at least has improved and maybe T-Mobile does have great coverage...on 1700AWS but I wouldn't know because I never got to test it.
Thanks for the prompt and helpful reply Satnam1989! Your advice is much appreciated, and I thank you for your insight into the T-Mobile iPhone situation.
Yeah, I had heard that the older iPhones don't support the 1700MHz band, hence T-Mobile releasing its own iPhone 5 model.
You're absolutely right, the 1900MHz coverage varies widely. I was in Denver a while back, and I was getting 3G the entire time on my iPhone 4s with TMO. But in CS, as I said before, and as you have noticed, coverage is iffy, with EDGE the norm 95% of the time. The good news is that, since you visited the Springs back in '10, Straight Talk has improved its coverage immensely. I have a friend who had an iPhone 4s with Straight Talk (it had an AT&T compatible SIM in it, something they regrettably stopped offering), and while he was using the phone for the past year or so, he had excellent service, including near-constant 3G speeds! So AT&T/Straight Talk hasn't completely forgotten CS, but it appears that TMO has, at least for now.
Naturally, Verizon coverage is really good here as well. I have a family member who is on a 2 year contract iPhone 5 with them, and he always has LTE. Of course, he's paying almost as much for himself individually then the rest of us are on the TMO family plan combined, so you pay for what you get I suppose. At least we aren't on contract, so that's a good thing.
I would recommend ditching your 3GS ($100) 4 ($170-$200?) and 4S ($275-$300) on Craigslist while you can because launch of 5S/6 in couple months is going to drop the older iPhone prices farther...if you have boxes n the phones are in good condition...you can walk away with roughly $500-$600 Total...that should give you enough to put money down on 3 iPhone 5's and pay $20/month....where you were paying higher with family mobile, I'm sure you can put those savings into the monthly fee's of 3 iPhone 5's and actually enjoy the iPhone experience....what you say?
This is an excellent idea! I never thought about putting the savings from switching plans toward new phones, but that's probably the best solution. The price of the iPhone 5 is going to drop once the new model comes out, so that will certainly make it more affordable right?
I just have a couple questions: if the iPhone 5 or the next gen is from TMO, would we get reliable service? It would be a shame to upgrade, only to have the same "Searching" and "No Service" messages pop up constantly.
Additionally, what would data speeds look like? I'm not expecting miraculous coverage from TMO (this being Colorado Springs) but could we expect better than EDGE speeds at least? Or does that just come down to their existing coverage, like it does now with our current iPhones?
I think what I've learned from this whole experience is that TMO is great for the family plan/group discount approach, but if one is using a non-TMO iPhone, then performance and reliability is really going to come down to location. If we lived in Denver, for example, we might not even have to upgrade, because that city has already been refarmed, so we'd be enjoying that 1900MHz coverage, which would include the 3G speeds the iPhones we have now are capable of.