I get the phone because of huge specifications. Of samsung in low price and buy it. But main problem is Os. the samsung Z1 run on Tuze which is one of the less use of Os in world. It does not support functions like android. It does not support android play store and it has less access to apps. Its app store is not updated it has only few apps which is important. Its app store does not contain highly graphics game like nova. I hate this smartphone you must not buy it by see the specification.