Important Notes:
Before you begin, make sure cellular network is available in your area.
If your iPhone can’t connect to cellular network, go to your iPhone settings and then check if Cellular is enabled or turned on.
If you think you haven’t done any of these methods yet, I strongly suggest you give them a try this time for who knows this could be the fix you’ve been looking for.
Step 1: Reboot your iPhone. Many issues associated with the firmware can be rectified by a simple reboot on the device. For those who need help, here’s how to reboot an iPhone 6:
Press and hold the Power (Sleep/Wake) button until the red slider shows up.
Drag the slider to power off the iPhone completely.
When the device is powered off, press and hold the Sleep/Wake button again until the Apple logo appears on screen.
Step 2: Remove and re-insert the SIM card. As I mentioned above, many cases of iPhones showing No Service or Searching for network prompt are associated with incorrect SIM card installation, and worst, a damaged SIM card. To determine whether the problem is caused by a damaged SIM card or not, you can try to use the same SIM card on any other compatible phones you may have. If it works fine on the other phones, proceed with re-installing the SIM card on your iPhone 6
Step 3:Check Date & Time
Hope It Works
Thanks
Varun
Honestly that's a strange one.
I've seen SIM, lightning connector, and board issues all cause it.
iPhones are plagued with "searching" problems and usually after ruling out parts (such as the lightning connector), it turns out that the board needs some serious rework with a lot of potential headache involved. I for one am not taking them on as a repair because of that.
If I were you, I would try a second lightning connector from a different vendor, preferably a reputable vendor like iFixit.com because aftermarket lightning ports are infamous about having service issues. If that doesn't solve it, I would use it as an iPod.
由 Rany 完成的