{"id":6654,"date":"2026-05-28T09:43:09","date_gmt":"2026-05-28T08:43:09","guid":{"rendered":"https:\/\/undo.be\/faq\/activatie-van-mijn-fysieke-sim-kaart-lukt-niet-wat-moet-ik-doen\/"},"modified":"2026-05-28T09:49:00","modified_gmt":"2026-05-28T08:49:00","slug":"activatie-van-mijn-fysieke-sim-kaart-lukt-niet-wat-moet-ik-doen","status":"publish","type":"faq","link":"https:\/\/undo.be\/nl\/faq\/activatie-van-mijn-fysieke-sim-kaart-lukt-niet-wat-moet-ik-doen\/","title":{"rendered":"Activatie van mijn fysieke SIM-kaart lukt niet. Wat moet ik doen?"},"content":{"rendered":"\n<p>Een activatie kan om verschillende redenen vastlopen. Probeer eerst de volgende stappen: <\/p>\n\n<p>&#8211; Controleer of je het volledige 13-cijferig nummer van je SIM-kaart correct invoert. Het staat op de achterkant van de plastic SIM-houder. <\/p>\n\n<p>&#8211; Heb je onlangs een nummeroverdracht aangevraagd? Dan kan je SIM-kaart pas geactiveerd worden zodra de overdracht voltooid is. Check de status in onze app of My account op https:\/\/wsc.undo.be\/?lang=nl \u2014 een groen kader rond je nummer betekent dat je nummer actief is.  <\/p>\n\n<p>&#8211; Werkt het nog niet, contacteer ons met je SIM-kaartnummer (13 cijfers) erbij. We checken dan vanuit ons systeem wat er fout loopt. <\/p>\n\n<p>Heb je een eSIM in plaats van een fysieke SIM-kaart? Bekijk dan onze FAQ &#8220;My eSIM is not working&#8221;. <\/p>\n","protected":false},"template":"","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Activatie van mijn fysieke SIM-kaart lukt niet. 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