My new iPhone 5 says no service. How do I fix that?

SAme problem here, in two days I have two iphone 5S with No service issue ***!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Fix the dam iphone!!!

on 8/13 my iphone 5s died from not being charged when I was able to get it charged it had "no service" at the top. when I do get any signal it is 1 bar and says extended. I have been through all the troubleshooting with verizon including a new sim card. Apple insist its a network problem but verizon can not resolve the issue. I would appreciate any help

I have had this problem for a year and thought I'd tried everything but I believe I've now fixed it. I turned off automatic carrier selection (Settings/Carriers/Automatic) and waited an age before it came up with the available operators (EE, Vodaphone, 3, O2). I selected EE and since then it hasn't once shown no service.

I hope this helps others.

Using old phone with service still on you call 611 and follow the prompts. Had to power off the new one and It took 5 minutes for ATT to activate the new one, the old one changed to emergency calls only. However on my new iPhone 6s Plus I am greeted with one bar of signal on ATT. Wow do I want to cancel my att service, send the phone back, and jump to another carrier. I also feel like I've gone two years backwards to this latest 6s plus from my Sony Expedia z3 with 4K video and superior music. Looking for the z5 release dates now.

I was having the same problem as of yesterday and did a google search to find this forum. My problem was that I was a victim of fraud. Someone in FL (not my home state) walked into an Apple store and upgraded my phone and my service was shutoff. Not sure how this could happen since it seems like I have to provide all sorts of information to prove my identity (at least with ATT) however, it appears Apple stores do not have the same policy or some obviously do not. .

SOLVED

Swap the SIM of the offended iphone to a known good iphone, if the NO SERVICE appears on the other one theproblem is the SIM, go to the carrier and ask for a new SIM, NO MATTER WHAT THEY Tell you ask for a new SIM. I had to break mine in front of the non cooperative agent and told him now evidently I need a new SIM.

Worst phone i have ever experienced. I used BB, Samsung, Nokia and Moto. But iPhone is extremely worst with this 'No Service' issue. We are spending our hard earned money but no one from Apple is taking initiative to resolve this. Sorry i have to say this Frankly, Bull **** service and support.

I will throw iPhone 5S in dustbin.