I have iphone 6s. After unboxing it I remember I selected 2G as preferred network for Voice calls to save battery. But in my area 2G coverage is poor so now I want to change the voice call network settings to 3G, but I cannot find any option to do so.
In settings only mobile data setting is available,no option for voice.
Kindly help me out with this.
In settings only mobile data setting is available,no option for voice.
Kindly help me out with this.