Hello. I’ve had my phone for 4 years now I think. A few days ago, it started dropping calls & the T-Mobile network would suddenly fade out. Then yesterday, unable to make calls at all. I’ve called & there’s nothing wrong with T-Mobile in my area. I’ve tried turning the phone off & on repeatedly, Taking the sim card out & putting it in the second sim card slot, taking out the battery for a bit then restarting. Nothing seems to budge the problem. Any ideas? I so hate to buy another phone. Thanks!