Extended means you are currently roaming. Has it always roamed in this area or do you usually have good service? I will be glad to check the towers in your area. May I please get some cross streets close by including the city, state and zipcode?
Although I'm not roaming, for the past two days, 4G service has been non existant in the Boston and Greater Boston area. I usually get a strong 4G signal in Watertown, MA and also in Danvers, MA. However, only 3G service has been available.