I heard that in Bnei Brak they like iPhones recently, even Rav Chaim Kanievsky is talking about them.
I myself have a Sony (Ericsson) Xperia Arc S, from the 2011 series. Pretty good phone, *with* replaceable battery. I use a lot of power and I use my phone as emergency GPS device when mountaineering and in rough terrain, so I always carry spare batteries. No sense in using a phone with a fixed battery then. (Think iPhone.)