see also: Android for admins, Android backups
| Name | short description |
|---|---|
| AdAway | Ad blocker |
| CALCU | calculator |
| DAVx5 | sync calendar/contacts/tasks with WebDAV |
| Aegis | Generate 🇩🇪 2FA one-time passwords (with export and encryption feature) |
| K-9 mail | Mail client |
| KeePassDroid | Password Manager |
| OandBackup | Backup your smartphone |
| Red Moon | Tint screen for less strain on eyes |
| Relaxio | Relaxing sounds |
| StreetComplete | Help complete OpenStreetMap |
| SyncThing | Synchronise files |
| Open Camera | FOSS camera app with many features |
| Name | short description |
|---|---|
| WLAN Tester | WLAN analyser |
| Port Authority | Port scanner |
| Change my MAC | |
| CIDR calculator | |
| ConnectBot | |
| DNS Hero | |
| Termux | Terminal |
| zANTI | Pentesting |
| Bettercap | |
| Port Authority | |
Yes, you should. Android since 7.0 has an efficient file-based encryption method which doesn't impact performance in a noticeable way (only 3-4% speed loss). You should upgrade your phone to the latest version and check that the processor supports modern encryption and hashing algorithms.
See also: Why are so few Android phones encrypted, and should you encrypt yours? (old article, performance is a lot better nowadays)
Settings menu → Security (wording could be different). If your device is encrypted, that's displayed here. Some devices will allow SD card contents to be encrypted, by default Android just encrypts on-board storage.
If the device isn’t encrypted, start the process with the Encrypt phone option.