[HTC Sensation] adswuk:
This is a Problem for sure .. But is there a solution ?

Having read the reports of the sensation I wont be buying it just yet, recently I purchased a Incredeble S and it just did not work right it glitched . if asked what was wrong my answer would be .. its just not right .. It was changed and the new one is a different beast.. was the first faulty ? .. not really but it was not right, reception was poor sometimes it would not shut down for a while the screen glitched and the apps didnt open and call quality echoed "sometimes ' ... It was just not right.

I am a electronic design engineer and in my opinion the problem with these phones is actually what we know as a paralax of errors , this in electronic terms means its not one problem its a series of problems caused by a series or differences , caused by a series of tolerence multiplicaions , now let me explain.

Imagine you have a chip that is fed by a voltage supply, and that in turn is regulated by another chip that feeds several chips that run several others, these chips are soldered to a board that in turn is mass produced using copper and its all put together to create a phone .

The missconception is todays production proceses are perfect ,, THEY ARE NOT like anything there has to be a manufacture tolerance and like anything that tolerence is individual to each part , now if you can imagine that no matter how tight that tolerence is, getting a collection of parts that are on the edge of the limit does occur, be it the outer limit of the inner limit. When this happens if not enough head room has been left ( IE alowence of tolerence differences ) the product may fail . If not fail just gltch ... Now If we consider a modern smartphone and the low voltages and data buses that flow around the unit trouble is a certantity for some units . Lets add some software and code variation and hey presto you have some units that that do not work 100% right .

With the above in mind mass produce these units and we have the problems so many seem to suffer. These problems may be circumvented by re written code or they may just be dealt with by small re designed head room and a change of branded parts but no matter what anyone thinks in my opnion with each generation of smartphone and the extra functions features and extreme data managment this type of "faulty "but not quite right will become more common .

To re inforce this point most of us have some kind of computer knowledge and we know that memory can be exactly the same spec but in use one brand works better than another . Tolerences at their best pure and simple.

I have designed electronic product for years and even if most designs are computer designs now , it will still take a human to understand perfection does not exist, everything electronic will vary no matter how small, it will vary it has to, only with smartphones it shows up in more places and it shows up by just not working right .

The key to all of this is good design tight tolerneces and more than all of this understanding warrenty procedures . We all expect more these days but we want to pay less ..

Welcome to the result guys, and the new era of design/manufacturing issues.