Phone with API
About this app
Welefon is a Phone App that is simple and modern at the same time. You can dial numbers and receive calls. It does not do anything you do not need, e.g. provide a contact list that your system contact App alrady contains.
The special feature of Welefon is an API that allows a seamlessly integration of other apps in your phone experience. The Welefon source code contains an example App that uses the API in the folder apidemoapp.
Using this API, other Apps can receive details about the current calls. Like the deprecated PhoneStateListener of Android, this contains the phone number. In contrast to the PhoneStateListener, you do not need to fear the removal of the API. Additionally, Welefon includes details of calls in the background, e.g. calls that are in the state "hold".
Welefon can receive additional caller details from other Apps. This can be a caller name, a caller details action and a RemoteView. The received caller name is shown as you expect it, completly independent of the system contact list. If a detail action is provided, then you can tap on the name to jump directly to the right place in the other App.
The RemoteViews are the method that allows Widgets on your homescreen. The same method can be used to show additional details and controls in the call screen. This allows showing any extra details.
Of course this is safe and secure: The Welefon API can only be used with your permission.
Licensed under GPL-3.0-only.
What's New in v2.0.0
Imported from the F-Droid repository index.
- - improved call log
Version history
May 27, 2026 · 3.2 MB · Android API 29–37 · code 16
Imported from the F-Droid repository index.
- - improved call log
SHA-256 38f7c88ffb80031efcc7f6a0035ec0ff749298a027d4fb6b4694af1ec27d2ab9
May 27, 2026 · 3.2 MB · Android API 29–37 · code 15
Imported from the F-Droid repository index.
SHA-256 a46fe4a5c627663d89b091ed64b54430f8a94982bd4b476d9ca73d911331dc8a
Sep 9, 2025 · 3 MB · Android API 29–36 · code 14
Imported from the F-Droid repository index.
SHA-256 6f318b6fc3c2b755d914058e7e1945fb0ff6b06cc51642da715d653f5839b166
Will it run on your device?
74%
- Targets newer Android builds, so legacy devices may be excluded.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be de.wivewa.dialer is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.9.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Welefon first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Welefon, and a listing is removed when the evidence for it stops holding up.
Get Welefon
Every source we list for de.wivewa.dialer is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
38f7c88ffb80031efcc7f6a0035ec0ff749298a027d4fb6b4694af1ec27d2ab9
Signing certificate
0bcb97d2241646e2182ed4fb0cc232145e92934ec8765a483e828f2496854356
Permissions Required
What each permission lets Welefon do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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