Its also had same problem as relaince gsm had, in open area its signal strenght is too good and speed is also too good. But if a person stays in congested area then he/she has face a lot of problems.
Personally I am using the jio sim in faridabad. when I was in my second floor the signal strength is -8db and speed is too good, in 1st floor signal stregth is -11db and speed is modrate but when I was in my ground floor the signal strength is -15db and some times there is no network.