facing signals problem

[Draq]

i bougth samsunga galaxy S7 edge Dous. facing problem of signal strength. signals frequently drops and shows emergency calls only. there was no problem of signals in my previous iphone 6.
but in samsung galaxy S7 edge my number frequently goes to no service. signals are not static

[qersh]

please check if you didn't cut the sim card

[8aiser96]

me to