only 1 GB from 4 GB ROM is available for user in HTC Sensation XE.

i am not able to know why Sensation XE is claiming to have 4 GB of ROM but it makes possible for availability of 1 GB? what about the remaining part of 3GB? they are just setting system with a maximum of 200MB.

in this case i also owe a internal memory of 4GB, the case is there was no claim on their side so that they can provide 4GB available for those who make use of. i think with a new ROM which is compressed, likely to be of is 385MB. and the system partition stands as 800MB decompressed.

The system partition along with others are making use of internal memory. There are some more factors that should be taking into account. It all bootloader Storage , radio image adds up. .this is not to possibly full 3GB but rather very close to it can be filled.

I cant make sure in this case as the standard Sensation just has 1 gig of memory and they're making use of necessary software similar to that kind .the only differentiation between them is the way of presentation of specs. i can say that the earlier sensation did had a 4 gig chip, (about) 1 gig from which some part was able to acces by user.