iPhone 4S displays 'No Service' or 'No SIM Card Installed'

var enableAppleInstant = 'yes';var modelValue = 'SupportApple';var akamaiUrl = "http://km.support.apple.com";iPhone 4S displays 'No Service' or 'No SIM Card Installed'In certain situations, iPhone 4S may have difficulty recognizing a micro-SIM card, resulting in the following behaviors:

"Invalid SIM" or "No SIM Card installed" alert appears intermittently. Status bar displays "No Service" or "Searching" in a location with good network coverage."> ACUtil.setPOD('us~en'); var articleId = "TS4148"; var ACStaticText = { 'more': '…more', 'less': 'less' };KmLoader.akamaiUrl = 'http://km.support.apple.com';//function sendRead()var locale = 'en_US';Event.observe(window, 'load', function() {ACHistory.addKbView('TS4148', 'iPhone 4S displays \'No Service\' or \'No SIM Card Installed\'', 'en_US', 'unknown');ACUtil.getMultipleOffers('133476', 'TROUBLESHOOTING_ARTICLES', 'en_US', 'false');ACUtil.reportView('TS4148', 'en_US');// Apple Instant Feed statistics code if(locale.indexOf("en")!=-1 && (enableAppleInstant == "yes")){var store = new Persist.Store('FeedStats');if (store.get('resultActivity')=='true'){var time = new Date();setReadTimer = setTimeout(function(){var feedStats = new ACFeedStatistics();feedStats.updateRead('TS4148', store.get('position'));store.remove('TS4148');store.remove('position');}, 3000);store.set('TS4148', time.getTime());}} });Event.observe(window, 'beforeunload', function(){// Apple Instant Feed statistics code if(locale.indexOf("en")!=-1 && (enableAppleInstant == "yes")){ var store = new Persist.Store('FeedStats'); if (store.get('resultActivity')=='true' && store.get('TS4148') !== null){ var time = new Date();var timeDiff = time.getTime() - store.get('TS4148');if (timeDiff iPhone 4S displays 'No Service' or 'No SIM Card Installed' Products Affected

iPhone 4S

Symptoms

In certain situations, iPhone 4S may have difficulty recognizing a micro-SIM card, resulting in the following behaviors:

"Invalid SIM" or "No SIM Card installed" alert appears intermittently. Status bar displays "No Service" or "Searching" in a location with good network coverage. Resolution

If you encounter any of the above symptoms on your iPhone 4S, follow the steps below.

Note: These steps are necessary only if you are experiencing these symptoms on an iPhone 4S.

Back up your user content and settings using iTunes or iCloud. See this article for more information. Restore your iPhone 4S using iTunes.
After the process is complete, restore your user content and settings from your backup. To confirm that you've successfully restored, verify that the version is now iOS 5.0.1 (9A406) in Settings > General > About.Additional Information

If you continue to see "No Service" intermittently in the status bar, update your carrier settings.

$('articlecontent').select('img').each(function(element) { if(element.width > 640 ){ var imageDiv = document.createElement('div'); imageDiv.setStyle({ 'display':'block', 'width':'660px', 'overflow':'auto', 'border':'1px solid #dedede','margin-right': '15px'}); element.parentNode.replaceChild(imageDiv, element); imageDiv.appendChild(element); } }); Rate this article:Not helpfulSomewhat helpfulHelpfulVery helpfulSolved my problemOne Moment PleaseThanks for rating this article Not helpful Somewhat helpful Helpful Very helpful Solved my problem Share this article Twitter Facebook Last Modified: January 05, 2012 Article: TS4148 Views: 271399 Rating: 3.0/5 Stars
(836 Responses) LanguagesCzechDanskDeutschEnglishEspañolSuomiFrançaisHungarianItaliano??????NederlandsNorsk BokmålPolskiPortuguês (Brasil)PortuguêsP??????SvenskaTurkish???????? Event.observe(window, 'load', function() { new KmLoader('2', 0, 0, 'iPhone 4S displays \'No Service\' or \'No SIM Card Installed\'', 0, 0, 'en_US', 0, 0, 'support_site.related_articles.TS4148',undefined,undefined,'TS4148');}); Related Articles Still need help?