What all would be a good choice of smartphone for me, keeping in mind the following specifications?

1)Price range: Rs.20000/- and below (preferrably less than rs.15000/-)

2)Camera quality shoud be good

3)Decent battery back up… Should last 1 day confrotably… And I use Wi-Fi and DATA CONNECTION sparing… I don't watch much videos or listen to music using my phone… And I don't play gamees as well… Not too much phone calls either

4)Dual sim… A high degree of preferrence forones with standard SIMs

5)Flashlight (yes… I need that for my job)

6)Good internal memmory… Preferrably 16 GB and higher… Should have the option of using an external memory card as well

7)RAM: atleast 1 GB, preferrably 2 GB

I have had issues with LENOVO… Memory used up… Programms don't work… Sound issues (can't listen on phone, even ring tone was affected… And this issue crept up again even after 1 repair)

Sony experia… Gethung every now and then

Thought about zenfone 5… Lot of people were however complaining about battery issues (not lasting even 1 day)

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- Andrés