The internal storage refers to the built-in storage space available in a device for system data, apps, and user-generated data. With a large amount of internal storage, you can save more files and apps on your device.
MTBF (Mean Time Between Failures) is the manufacturer’s estimation of the average time for a device to fail.
It is more resistant to impact and falls.
We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.