I bought this phone almost 2 years back, at a whopping price of 21000/- , it was discounted price , while actual price was 26000/-.The phone is still working nicely and the best part you can get same at the price of 15000 only.
This has few limitations like , it doesnt allow you multitasking doesnt support flash hence many gaming activities can not be performed.
This accommodates micro SIM , you will either have to get it cut or will change it from your service provider( later is better option to protect your data) .The battery is not removable( though it doesn t matter to me) .
So at this price ( INR15000) I would recommend .You will get nice camera , jelly bean platform, expendable memory and best part OTG support.
Me a loyal customer of panasonic did buy another phone just to have latest 4.4.2 android and bought p55 felt terribly cheated.
Anyways experiences with P 55 are given in separate review.
P51 is better then rest of the panasonic phones, specially at SO LOW PRICE. Price quoted below is not correct .