Updated Aug 24, 2026 · v4.3.0
With the mobile three customer zone, you have your costs firmly under control.
Everything about your Drei contract – in one app. With the Customer Zone app, you always have all the latest information and costs for your Drei products and services at your fingertips. Check your usage in real time, manage your plans and add-on packages, activate an eSIM, or handle your service requests directly on your smartphone. • Keep track of your usage and allowances at all times • View your bills • Change your plan or get a new phone • Adjust your roaming settings • Activate add-on packages flexibly • Use your eSIM quickly and easily • Discover personalized offers and benefits • Change your personal information • Adjust important settings anytime Simple. Secure. Always available. Download now and get started!
15 years on Google Play
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