Xiaomi Redmi 3S comes with 2GB RAM/16GB storage, while the Redmi 3S Prime has 3GB RAM and 32GB storage. The 2GB Redmi 3S doesn’t have a fingerprint scanner on the back, unlike the Redmi 3S Prime. Given the pricing, the Redmi 3S and its Prime version are a new offering in the budget segment from Xiaomi.
In terms of specifications, Redmi 3S and 3S Prime have a 5-inch HD display, Qualcomm Snapdragon 430 octa-core processor, 13 MP primary camera and a 5 MP secondary camera. The battery is 4100 mAh. Xiaomi Redmi 3S runs MIUI 7 based on Android 6.0.1 Marshmallow and will come in Gold, Grey and Silver colour options. I’ve been using the Redmi 3S Prime, (the 3GB RAM version), and here’s my first impression of the phone.

Design:
The Design of the phone is almost similar to Redmi Note 3. the phone is incredibly light when you hold it, and it doesn’t feel bulky at all. With the smaller HD resolution display, the Snapdragon 430 processor. But Xiaomi has kept the metal unibody design as the same, and this price-point it is unusual to find a smartphone that looks so good. However the Redmi 3S Prime costs only Rs 1000 less than the 16GB version of the Note 3.
Display:
This phone has a more compact 5-inch display. Yes, the HD resolution feels underwhelming but not feeling like full HD, but it is still a very good display from Xiaomi.
Performance:
On the overall performance front, the Redmi 3S Prime has so far proved to be more than adequate. Games like Asphalt 8 run smoothly on this, with no heating, and I’ve not yet faced any app crashes. But I’m going to spend some more time with the software and the phone, to see how it continues to perform.
Camera:
The rear camera is 13MP, and I tried to make shots in varied lighting conditions. However, the few shots with lower lights are not upto that level but still good. The camera is fast, with no shutter-lag, and focuses quickly.
Battery:
The interesting is the battery in the Redmi 3S phones is slightly bigger than the one in Redmi Note 3 at 4100 mAh. I say interesting, because . The battery size means this phone won’t die anytime soon.