The LG K40S, the successor to the LG K40, has fewer screen edges and significantly more battery capacity. In addition, it's even a bit cheaper, but there's no progress in terms of performance. You'll find out whether it's still worth buying in the test.
https://www.notebookcheck.net/LG-K40S-Smartphone-Review-With-true-dual-camera.447942.0.html
What's wrong whit phones the only can get bad 3G signal whit slow ping.
For 10 euro internet its unacceptable.