Why doesn't my iPhone get signal?

I've tried 2 different sim cards but my phone most of the time has no service

Sometimes if you have a case on it can alter the reception. If you take the case off it might work. If this does not work and you have tried different sim cards then take it back to apple. Apple usually do a swap if your still in warranty.

  • Why isn't the Wi-Fi on my iPhone 4 working, even though the signal is strong? It worked this morning. It worked when I went out for lunch (Starbucks has free Wi-Fi, duh.). And it worked when I went shopping (at Target. However, when I came back home around late afternoon it stopped working. I have Wi-Fi in my house, and even when the signal is strong, it just keep loading it. No usual checkmark that shows it works. The Wi-Fi works fine on my brother's 3DS and we already checked the home computer router. I just don't know what's wrong.
  • Why isn't my Wi-Fi signal as strong on my iPhone? A few weeks ago I had great Wi-Fi connection, for years. But now I can't catch Wi-Fi from anywhere in my house unless I'm in the room where the router is… I got a new router but as soon as I leave the room (where the router is) my Wi-Fi signal drops! It's not only happening at my home but also at my gram gram's house and my sisters house. It's really frustrating. So I know it's not my router it's my iPhone.
  • Why don't I have signal on iPhone 5? I cut a t mobile micro sim into a nano sim and it recognises the sim but no bars of signal are coming up. When I put the sim into another phone it recovers texts and signal but when I put it back into my iPhone 5 it says no service but it recognises the sim as EE and Tmobile and orange. I was wondering if I need a proper nano sim or is it the phone that's broken.
  • Why doesn't my right headphone doesn't make sound? I have the iPhone 7 EarPods (not the Bluetooth ones ) They were working just fine until one day I realized that there was no sound coming out of the right side. I already cleaned it but doesn't work. How do I fix this?