Smartphone, shut up!
✔ A checklist for your mobile security

You care about your safety

You share this list with others

You check this list from time to time

You have already taken part in a cryptoparty

You know your most important contacts and logins by heart

You are not using a dumbphone

You have removed your SIM card number

You have set up a screen lock

Your smartphones are encrypted

You can switch off your devices quickly

You are using a privacy film

Your SIM card is protected with a PIN

You do without memory cards

You do not use biometric activation

You have deactivated the developer features

You only use your own charging cable

Your operating system has verified boot

You have sealed your device

You have noted the unique numbers of your device

You make regular backups

Your backups are encrypted

Your backups are stored decentrally and also outside your home

You practise restoring your backups

You do not store unused appliances in your home

You do not unlock your smartphone on demand

You have overwritten your phone once

Deactivate unused interfaces

Avoid Bluetooth devices such as earbuds if possible

Cameras that are not in use are covered

You use data-saving telephone tariffs

You have objected to the marketing of your transaction data

You have not activated your mobile data connection continuously

You don't take your cell phone to the demo

You don't use apps like "SnoopSnitch"

You use anonymous SIM cards

You use your smartphone exclusively for one SIM card

You often use other SIM cards and a proxy phone

You withdraw your credit anonymously

You don't give out your phone number

You don't make calls with your anonymous card

You have purchased SIM cards and phones anonymously

You use number suppression wisely

You dial 110 and 112 carefully

You have set up a block for third-party providers

You don't give your name immediately when you answer the phone

You are using a free operating system

You have freed your phone from bloatware

You have deactivated or deleted your advertising ID

Are your apps and system up to date?

Do you use a password manager?

You only install apps from trustworthy sources

You check access rights carefully

You use alternative app stores

You do without Google Play services and Apple services

You use privacy-friendly web browsers

You waive root rights

You use secure messengers

Activate two-step verification in your messengers

Do not share your Apple ID and deactivate iMessage

You restart your phone often

Your second factor for logins is on a separate device

Use alternative frontends

You use passkeys

You secure your accounts with two-factor authentication

You are using an ad blocker

Do you use different pseudonyms and e-mail addresses?

You do not use your pseudonyms at the same time

You use TOR or the TOR browser

You use privacy-friendly search engines

You only use encrypted cloud storage

You use VPNs wisely

You delete metadata from your images

You read through data protection declarations

You encrypt your emails

Delete unused accounts

You check whether you are affected by data leaks