The htc u ultra is another phone from htc’s u series but it does not justifies to its price which it is quoted. It hai mainly a ram of 4gb with 64 gigs of rom. It is packed with 2.15 ghz quallcom snapdragon 821 chipset. It has 12mp rear and 16 mp front camera with optical image stabilisation and auto focus .inspite a screen size of 5.7 inches the battery is only 3000mah which is non removable. Overall the features are good and phone also looks very nice but the price is very high. We have many good phone with these features at a lower price like samsung c7 pro, one plus 3t, moto g5 plus and moreover the battery is also of smaller capacity. So I wolud suggest you to better go for other phones as you can get same features at a comparably lower price.