Nice to find others who still haven't given up the Windows Phone. I am looking at replacing a 950 XL. I like the dual sim functionality, but the 950 XL has a serious limitation - whichever sim is not enabled for data use is restricted to 2G connectivity. AT&T shut their 2G network down, so I have to use my T-Mobile sim in 2G mode. The HP Elite X3 had a firmware update that allowed the non-data sim to be used in 3G mode. How does this work in the Jade Primo?