{"id":4849,"date":"2026-01-20T08:39:53","date_gmt":"2026-01-20T08:39:53","guid":{"rendered":"https:\/\/truenmbstapp.de\/?post_type=help&#038;p=4849"},"modified":"2026-01-23T14:22:22","modified_gmt":"2026-01-23T14:22:22","slug":"how-to-block-an-unwanted-phone-number","status":"publish","type":"help","link":"https:\/\/numbuster.pro\/ja\/help\/android\/calls-caller-id-android\/how-to-block-an-unwanted-phone-number\/","title":{"rendered":"How to block an unwanted phone number?"},"content":{"rendered":"\n<p>NumBuster lets you block unwanted calls and SMS. You can manage your blacklist and set up rules to automatically filter out spam and suspicious phone numbers.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How to add a phone number to the blacklist?<\/h3>\n\n\n\n<p><strong>During a call:<\/strong> Tap the <strong>Block<\/strong> button on the NumBuster incoming call screen. The phone number will be immediately added to your blacklist.<\/p>\n\n\n\n<p><strong>From your contacts:<\/strong> Open the contact list on your smartphone and select the phone number you want to block. Tap the <strong>Block<\/strong> icon next to the contact.<\/p>\n\n\n\n<p><strong>From the phone number page:<\/strong> Search for the phone number in NumBuster. Open the phone number&#8217;s profile and tap the <strong>Block<\/strong> icon in the bottom panel.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How to set up automatic blocking rules?<\/h3>\n\n\n\n<p>You can set general rules for NumBuster to automatically filter calls and messages. Go to <strong>Settings<\/strong> \u2192 <strong>Blocking Settings<\/strong> and turn on the relevant toggle:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SMS Blocking:<\/strong> Completely blocks SMS from phone numbers in your blacklist.<\/li>\n\n\n\n<li><strong>Unknown numbers:<\/strong> Blocks all calls from phone numbers not in your contact list.<\/li>\n\n\n\n<li><strong>Block international calls:<\/strong> Rejects all calls coming from other countries.<\/li>\n\n\n\n<li><strong>Template blocking:<\/strong> This tool lets you block entire series of phone numbers. To do this, tap <strong>Add rule<\/strong> and set a blocking template without spaces or special characters (for example, 7985 or 799912).<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>NumBuster lets you block unwanted calls and SMS. You can manage your blacklist and set up rules to automatically filter out spam and suspicious phone numbers. How to add a phone number to the blacklist? During a call: Tap the Block button on the NumBuster incoming call screen. The phone number will be immediately added [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false},"help_category":[471,542],"help_platform":[],"class_list":["post-4849","help","type-help","status-publish","hentry","help_category-android","help_category-calls-caller-id-android"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to block an unwanted phone number? - NumBuster<\/title>\n<meta name=\"description\" content=\"NumBuster \u3067\u306e\u8ff7\u60d1\u306a\u96fb\u8a71\u756a\u53f7\u306e\u30d6\u30ed\u30c3\u30af\u3068\u3001\u7740\u4fe1\u901a\u8a71\u304a\u3088\u3073\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u81ea\u52d5\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3002\" \/>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to block an unwanted phone number? 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