MTS Dialer (cz.mts.phone) 10.2.4
Phone app (calling, blocking, contacts) that you’ll love !
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7.87 MB
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About MTS Dialer (cz.mts.phone)
Are you looking for a safe, simple, and reliable calling app that won't bother you with ads or collect your data? ? You've just found it.
Why you'll love this app? ?
Customizable colors:
Set the colors exactly to your liking.
100% free:
No fees, no limits - all features are available.
Maximum privacy:
- The app collects no data about you
- It allows you to save contacts to its own hidden storage, invisible to all other apps.
No internet connection is required:
Internet permission is not declared, the application runs offline, nothing is sent or downloaded anywhere!
Ad-free:
No pop-ups, no annoyances.
Simple controls:
Logical and intuitive, anyone can use it. You can even search for contacts directly via the dialer using T9.
?? No more unwanted calls:
Check a single box to allow calls only from your saved contacts (blocking spam, scams, and annoying call centers). Perfect for children and seniors.
Call recording:
Although the latest versions of Android strictly prohibit call recording for non-system apps, call recording will work with this phone app when used in conjunction with Shizuku.
Open-source (GNU/GPL v3):
You can download the code from my website (mts.speccy.cz/mtsphone.htm) or GitHub and review it at any time.
The app's story
The original app was created by Slovak developer Tibor Kaputa (Simple Mobile Tools). Unfortunately, he sold it, and the new Israeli company immediately introduced an overpriced subscription model and ads. Naturally, this led to the creation of a new branch - first the Indian fork "Fossify," and subsequently this Czech fork of mine, which gets the app back on the right track and responds quickly to your feedback
Help the app grow
I would appreciate any reviews or ideas for improvement. Just please keep the core philosophy in mind: simplicity and functionality!
License: GPL-3.0-only
Why you'll love this app? ?
Customizable colors:
Set the colors exactly to your liking.
100% free:
No fees, no limits - all features are available.
Maximum privacy:
- The app collects no data about you
- It allows you to save contacts to its own hidden storage, invisible to all other apps.
No internet connection is required:
Internet permission is not declared, the application runs offline, nothing is sent or downloaded anywhere!
Ad-free:
No pop-ups, no annoyances.
Simple controls:
Logical and intuitive, anyone can use it. You can even search for contacts directly via the dialer using T9.
?? No more unwanted calls:
Check a single box to allow calls only from your saved contacts (blocking spam, scams, and annoying call centers). Perfect for children and seniors.
Call recording:
Although the latest versions of Android strictly prohibit call recording for non-system apps, call recording will work with this phone app when used in conjunction with Shizuku.
Open-source (GNU/GPL v3):
You can download the code from my website (mts.speccy.cz/mtsphone.htm) or GitHub and review it at any time.
The app's story
The original app was created by Slovak developer Tibor Kaputa (Simple Mobile Tools). Unfortunately, he sold it, and the new Israeli company immediately introduced an overpriced subscription model and ads. Naturally, this led to the creation of a new branch - first the Indian fork "Fossify," and subsequently this Czech fork of mine, which gets the app back on the right track and responds quickly to your feedback
Help the app grow
I would appreciate any reviews or ideas for improvement. Just please keep the core philosophy in mind: simplicity and functionality!
License: GPL-3.0-only
| Release info | Update on Oct 20, 2026 |
|---|---|
| Release notes | Test version (release candidate) !! THIS IS ONLY VERSION FOR GITHUB (NOT AVAILABLE FOR GOOGLE, HUAWEI, AND F-DROID) !! (because I first need to test the changes I made there...) Dutch translation Dialing codes containing * or # (e.g., for call forwarding, various service codes, etc.) are now correctly passed through to the system Number blocking now supports negation using the ! character at the start (e.g., !+420* means the app will block everything that does not begin with +420); this can be used to block all international calls New notification for blocked calls The Android "back button" now minimizes the app instead of closing it Methods for identifying caller names and spam during an active call, as well as methods for initiating outgoing calls, have been simplified and centralized Fixed incorrect sizing and coloring of certain dialogs when using the system Android theme with "dynamic colors" enabled Emergency calls previously required a SIM card to be present; otherwise, they would fail to initiate If the app was not set as the default dialer and was granted this permission only after being opened, the call history list would not refresh until the app was closed and restarted Missed call notifications were previously cleared as soon as the app was launched; they are now cleared only when the "Recents" tab is viewed and the call list is loaded |
| Listing data | F-Droid |
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