I am using the Microsoft Lumia 540 for 4 months. It’s sound quality is worst and it’s headphones and speakers are not good enough in that range.
It is not a user friendly device and it’s user interface is very bad.
It’s build quality and style is worst and it has not fingerprint sensors and front flash.
It has not a metal cut finish but other devices in that range has metal cut finish.
It has lack of features and many apps on this device are paid and windows version is old.
It has 1 Gb of ram but other devices in that range has minimum of 2 Gb of ram so it is a minus point of this device.
After all this is not a value of money smartphone