Problem solution: the SIM card is not detected
First, you should your phone is simply switch off and on again. Also check whether the card is seated properly in the Slot.
Map dirty
Often small dust particles stuck on the map, interrupting the contact between SIM and phone. Clean the card with a micro fiber cloth.
Sim card of smart mobile
Smartphone or mobile phone is dirty
Also the contacts of the SIM Slots, you should clean once. This is like the iPhone very difficult to access in blow a couple of Times in the Slot.
- But a word of caution: Try to blow as much as possible "dry".
The SIM card is faulty
All this helps nothing, is not excluded a Defect of the card.
- The SIM card is still relatively new, is mostly a free replacement card from your provider sent to you.
- It is an age-related wear and tear phenomenon, in some providers, a minor cost for a new card.
Defect of the mobile phones
Possibly the Defect is also on your mobile phone.
- Try the SIM-card at best once in another device. The error should be in your device, please contact the seller or manufacturer and insist on your warranty rights.
- The Problem: at the Latest after two years of warranty and, often, the warranty has expired. A repair is worthwhile only in the rarest of cases. Here comes a new Smartphone is often much cheaper.
In Case Of Emergency: New Phone
Root or Jailbreak
If you have your iPhone a Jailbreak subject or your Android Smartphone is rooted, you should install the device to the factory settings reset. Even if you have not changed anything in the Software that can help with this step.
