Originally Posted by frenchie007
I just read that my plan at SFR uses what they call dual carrier which is in fact hspa+. So according to what you are saying this would trigger the 4g icon and since it is part of my plan it would come at no additional cost, which is great!
So just a final question just to be sure: if my phone detects LTE, will it use it instead of hspa+ (Even though my data plan does not include it)?
This would be up to your carrier and how they handle this. Your phone will take advantage of any data it can pull down. It's up to your carrier to decide what data you are able to pull. In most cases (in fact, I can't think of a case where this isn't true), you can only pull down what your plan is commissioned for. If your plan doesn't include LTE, it's probably a safe bet that your phone won't ever use it. This happens on the carrier's end. Your SIM card is how they keep track of your minutes, data, and texts used, data standard you're able to access, etc. and if they see your SIM as not on an LTE plan, they won't allow access to their LTE network.
If you want to be 100% sure, it might be wise to check your carrier's website to see exactly how they handle this. Like I said, I don't know of any carrier that allows access to their LTE network to people that don't have an LTE plan, then charge them for it, but I suppose it could be possible (albeit, somewhat shady).