The 6.7 MP Zeiss optics with an f/1.9 aperture performed remarkably well in low light for a mid-ranger.

Some users reported "Invalid SIM" messages, which sometimes required a physical SIM replacement or a firmware update from a Nokia Care center.

Connecting the Lumia 720 to a modern PC often requires specific USB or MTP drivers if Windows does not recognize it automatically.

"MTP USB Device Failed" errors are a frequent complaint. These are often resolved by uninstalling the device in Device Manager and reconnecting while the phone is unlocked.