Well, I have problem with my iphone 5 and iphone 4, I have both. I'm in Asia, I don't know if the machine structure are the same with Europe or U.S, but I'm sure it's same.
Yes, signal problems. First of all, I got my Iphone 4, I just used it only for a year. Then I bought Iphone 5, why?because the signal problems. I barely can't received message from some apps. So I thought it was the phone, so I sold it and bought Iphone 5, but...darn..it was having the same problems. How do I know?
I was tested my sim-card on android, and the messenger apps, like w.a, bb ect, it can quick received all the message (I sent many msg, just like spam), and there are no problem, but when I changed it again to Iphone 5, ooohh..goossh....I have to wait a long time to received it(the message) on my Iphone. Even I was received many messages the day after.
Is it my provider?nope...like I told you above, I've put in my sim-card into an android phone and there's no problem at all.
It's my experiences from Iphone 4 and now 5 with signal problems. Please don't say just use android..nope, I'm not a fanboy of Iphone, but I like Iphone...but the signal problems...(sigh).
Anyone know why this happening?