This model is very very nice & very good & the latest version is very brilent & For extra flexibility the Xperia M4 Aqua is also available as a Dual SIM phone under the nameSony Xperia M4 Aqua Dual. It’s slightly more complicated than that as both devices have their regional versions. These are mostly the same, save for the LTE connectivity, which lacks on one of the Xperia M4 Aqua Dual models ( E2312) . The rest all ship with LTE, but with varying band support depending on the intended region