The Samsung Galaxy S6 was not like the Samsung Galaxy S5 produces waterproof. This means that when touched important electronic components very quickly can get a technical defect by water damage with water.
Unfortunately you have to watch again increased, it does not come into contact with water so the Samsung Galaxy S6. Thus, the use in the bath you should rather let remain.
If it is very important for you that the new smartphone is waterproof, then you should in any case, the Samsung Galaxy S5 view, which is also very good technical performance has the presentation of, but unlike the S6 is also waterproof.