As field staff with mobile phone service I've gotten the third Dual SIM phone because I do not want to endure the eternal whining Tamagochis (constantly want some juice or mobile zickt with the hands-free rum). Since I have a lot of calls in the car, when customers call, the voice quality and reliable Bluetooth connection most importantly, smart phone features me is sporadic to me, getting short addresses or hotels or to book. After bad experiences with the Nokia Asha 501 (mobile microphone does not turn on when connected to the hands-off, thus ensuring incredible feedback and thus subterranean voice quality) I's again take the chance and am delighted: pairing, finished talks at 150 on the highway no problem, a trial even opened the window, feedback from my friend: Everything Prima. Both SIM cards can be preset or queries select them. So you can be reached on both, only that any time waiting on the unused SIM is not (ie: call with one card means that waiting is signaled for calls on this card, which is but another connected directly to mailbox), with a 70 phone you can just not have it all. Internet, Hotspot, WiFi works well, the attitude with which card you go to the Internet you should check but again and again because you come in several ways to the respective menu and fast times unnoticed what changes :-) The battery lasts under continuous load barely 2 days if all functions are at a bit shorter, without "energy guzzlers" such as BT, GPS and the like even longer and is again fully in 2-3 hours. A bit annoying I find unnecessary for me feature "video calls", which unfortunately does not can be deactivated, and the somewhat imprecise keyboard that has been well designed for something more delicate fingers than my ... All in all a really effective and very solid dual SIM smartphone with no major weaknesses.