I am using j7 prime daily it is very nice phone but it has very slow charging and it is becoming hot after using 4G net for 2 to 3 hour.but I like it it is so strong phone and the company did not told that it is water proof phone but it is I have done water test.when I wake up at morning the charging decrease more nearby 20 to 30 percent so it should be improved but it is so strong and stylish phone.