Samsung Z1 is the worst phone I have ever used. It is powered with 1.2 ghz dual core processor and 768 mb of Ram. It has 1500 mah of battery. It’s rear camera is 3.1 mp and front camera is 0.3 mp which is very low for capturing good photos. The phone runs on Tizen version which makes it more bad as you can get only limited apps about 300. It runs on 3g. It’s display is of 4 inches with 480*800 pixels resolution. It’s price is about 4000 rupees. It has only 4 gb of internal memory and can be expandable upto 64 gb. Phone gets hassled as you play heavy games on it. Poor performance phone in top 10 worst phones.