I have been using this phone for almost 6 months now, never had any serious issues of lags, crashing or heating. Yes, the phone does stutter at times, and a 1 Gb additional RAM would have worked wonders, but somehow OPPO has managed to form an optiomum hardware software combination. Hard core gaming is something the handset would not be able to handle, but I rarely play games, so cannot provide any views on that. A bit expensive for the current options around, but if you are looking for a handset that has good display and would do the job of checking emails, social updates, news and market updates, this can be a good option. Really reliable and durable. Great style and design with wide range of features.