Cost Down - Value Down?

The Samsung E1150i I bought already 2 years ago right after the appearance on the European market. I was so pleased with the value for money that I have (this time in brown) bought the same mobile over the two years.
It is quite normal for a mass product, designed by engineers that with the highest possible quality product is a favorable first time put on the market. After production of high volumes and a certain market share is transferred to the fact that product cheaper to produce in order to maximize the profit margin. This is quite normal. The product was then changed once again tested (of journals, etc.) is not it only natural.
Furthermore, you can try as a producer, to improve the product in such a way to offer customers new features (Value Added).
Unfortunately Samsung has apparently changes to the product made in those two years that have not only led to an improvement.
In my experiences may of course be an isolated case and subjective experiences, but I was disappointed to note a worse performance than the two year old TRADE-IN with the new equipment.

- So, I've found that the battery life when new unit failed to match the battery life of your old appliance and rapidly subsided.

- The call quality of the interlocutors has become considerably worse, though I have not changed the network. May be due to the microphone.

==> Therefore, the "Key Features" of the phone, so battery life and phone calls are not as good, therefore only 3 stars.

+ Otherwise, everything the same. So if you want a cheap mobile phone to call to and collapse, is served here but still. For Lowcost you just have to make concessions in quality.