Guide to Fixing No Service on iPhone 6s Plus No Service on your iPhone 6s Plus is among the most agonizing issues to experience. Fortunately, there is no need to despair because several different causes and solutions for it exist. The possible ways to analyze the case are as follows: No Service Common causes of No Service * Network settings. The obvious cause of connectivity problems may be incorrect network settings. Therefore, you should consider resetting them under Settings – General – Reset – Reset Network Settings. * SIM card issues. The misaligned or damaged SIM card is another common cause of the message. Check whether the card is properly seated in its tray and not damaged. You can also eject and reinsert it just in case. * Carrier problems. Sometimes, the cause of the message lies in your mobile carrier, which may be facing outages or experiencing problems with your account. Contact the carrier to verify the status of your account and networks in your area. * Software glitches. An outdated software version may be the reason for network problems. Update your iPhone to the latest iOS version and check under Settings – General – Software Update. * Airplane mode. Perhaps you have enabled the Airplane Mode that disables cellular connectivity. Temporarily on and off will help to reconnect the network. Troubleshooting * Restart your device. Common sense rules may help, as a simple restart can fix most of the temporary glitches; * Date and time settings. Incorrect automatic date and time settings can lead to network connection problems as well. Go to settings – General – Date & Time and ensure they are set on automatic; * Field Test Mode. For advanced users, finding themselves in Field Test Mode will provide information on signal strength and other network properties that could be helpful in diagnosing connections.iPhone troubleshooting (ad) * Contact support. In case none of the available methods work, the issue may be related to hardware or software that requires the support of Apple professionals. These comprehensive issues can help in most situations when you urgently need to restore cellular service on iPhone 6s Plus.