> ## Documentation Index
> Fetch the complete documentation index at: https://capitaloncomguide.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Credit Cards

> Capital One credit card guides — activation, phone, mobile app.

<div style={{background:"linear-gradient(135deg,#003057,#0067A5)",borderRadius:"20px",padding:"48px 32px",color:"white",marginBottom:"32px"}}>
  <h1 style={{color:"white",fontSize:"36px",margin:0}}>Credit Cards</h1>
  <p style={{opacity:0.9,fontSize:"17px",marginTop:"8px"}}>Everything about Capital One credit cards.</p>
</div>

**Breadcrumb:** [Home](/) › [Categories](/categories) › Credit Cards

<CardGroup cols={2}>
  <Card title="Activate Online (2026)" icon="globe" href="/articles/activate-online-2026-guide" />

  <Card title="Phone Activation" icon="phone" href="/articles/credit-card-phone-activation" />

  <Card title="Mobile App Activation" icon="mobile" href="/articles/mobile-app-activation" />

  <Card title="Security Tips" icon="shield-halved" href="/articles/security-tips-after-activation" />
</CardGroup>