I bought a T-Max Jaguar Android smartphone with Kitkat 4.4.2 and it is a budget smartphone. In this price range(Rs.3895), it's the best android phone available in the market
Hardware specs >
Processor: Dual core 1.2 Ghz
Internal storage: 4 GB, Android Kitkat OS takes 2.69 GB & you get 1.31 GB free space.
Memory: 512 MB RAM, you get usable 465 MB. OS & apps in background leave you 80 to 120 MB free RAM.
Display: 4.5" screen, Screen density is 240 DPI, Resolution is 480x854 pixels. It looks really great & doesn't seem cheap.
SIM: 2 slots for SIM cards, 1 normal size SIM & another for Micro SIM.
Memory Slot: Memory slot for Micro SD card(adjacent to Micro SIM slot) expandable upto 32 GB. I put a SanDisk SDHC 32 GB 48 MB/s Class 10 Ultra card & it works fine.
Battery: 2000 mAh. Battery drains quickly when Data connection and/or Wi-Fi is on.
Camera: It's definitely not 8 MP as described by manufacturer but of OK quality. More like 5 MP. Doesn't give clear pixels when zoomed. Front camera is 1.3 MP. Flash is not so good but manageable.
Performance >
Without gaming(I haven't installed any), it doesn't lag or hang.
Battery performance varies when connected to internet & Wifi. Lasts about 4-5 hours on average usage.
Gets hot when Wifi or Data Connection is on.
Speaker is not too loud but average. Earphone provided in the box is good but not for audiophiles.
Camera quality can disappointing.
Pros:
Cheapest smartphone with all these specs & features
Slim
Not too heavy
Display quality is really great
IPS Touchscreen performance is very good
3G network is really fast
Plays HD videos & movies(with MX Player)
Doesn't lag(without gaming)
Tight back cover
Very thin battery
2000 mAh battery
Common apps like facebook, twitter, whatsapp, opera/UC browsers, instagram, kik flipkart, amazon etc run very smoothly.
Cons:
Gets hot while Data Connection is on/Wifi is on/loudspeaker is used for about 30 minutes/talking on phone for 10-15 minutes
Camera quality is not as per specs described
Battery drains quickly when Data connection and/or Wi-Fi is on. So you need a power-bank while traveling
It produces a very slow humming sound in earphone when connected to charger
Though the back cover seems smooth, it is not very strong
A tiny exclamatory symbol & 3 Chinese letters next to it appear at the top left(near notification corner) sometimes.
Well, HD recording is possible but quality of the video can't be too good if the camera quality is not very good.
No 3rd party Screen Guard or Flip cover is available. Only Pouch & holster are available.
Even though it has these drawbacks, it's the best android phone without much hangs/lags.
NOTE: It's made in China.

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