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When i switch to 3g or 4g phone goes to no service ..sometimes it came back to 2g 2g working perfect ..do i have to replace signel ic .. where it is locate ?? plzz help me
Try settings –> General –> Reset Network Settings If this doesn’t resolve it, take it to an Apple store. Since it is less than a year old, it is still under warranty, and they can fix it free.
