I have been using 3s prime since 2 years and I have to say that it have stand on my expectations. The device memory management is too good. It have a 3 GB RAM which provides enough speed to the processor and avoids from any lags.It has 32 GB internal ROM where around 24 GB is available anr the space provided is sufficient. It has a hybrid sim slot which I didn’t liked much because I can then only use one sim if using a external memory.The battery life is too good with 4000 mAh battery it would run whole day with an optimum usahe and this strength of battery is observed by me till date and it has never betrayed me in the matter of that. The charger of the phone also provides fast charging.Speakers quality is not that good. Its satisfactory. If you play it at full capacity the quality would degrade day by day. But too good with the earphones.The durability of phone is too good and was unexpected. I am a bit rough with phone handling but the durability of the phone saved me a lot from damage expenses.Its a bit heavy than expected but overall I love this phone.