After about 3 weeks of testing, the following emerges:
> Very satisfactory reactivity screen for a phone in this price range
> Brightness a bit light, but adjusted to the max is very correct (some smartphones remain bright in full light)
> Switch from one SIM to another via the drop down menu at the top very convenient
all features dual sim are there: or call sim1 sim2, reception sim1 call and call waiting sim2 carefree / off sim phone on, internet data network on the sim of his choice, the other being just dedicated telephone, etc.
> Very satisfactory autonomy; it takes about 2 days and off GPS if data network (without intensive applications), otherwise 1 or 1.5 day with internet (or applications, depending on use), like all smartphones.
> Full 3D gaming spend frankly well; occasional slowdowns during heavy calculations (as a console / PC ...) (tested with GLYDER game 2: glider flying style of play, all in 3D and quite solicits the machine).
> Android 2.3.6: Simple and efficient environment, many applications, no worries to report.
Conclusion: fully satisfied by this smartphone to less than 200, the Samsung quality in this area is no longer in doubt ;-)