I have two of these as backup in Miraflores. They work quite well. I found one on Olx Peru for only 100 soles.
I lent one to my sister in law in San Juan de Miraflores and it works very well there. If you are behind lots of concrete you might have issues. I noticed Scotia Bank has Olo right inside the lobby in Miraflores near Parque kennedy.
It works well on Youtube and VOIP calls.
..A Peruvian once asked me:what's the difference between special and abnormal?.....well my answer was : Lady Gaga and Miley Cyrus..