Your SIM card
Keep your own number and plan.
Your SIM must have VoLTE enabled.
BLACKBERRY 10 · NATIVE VOLTE
Keep your BlackBerry.
Make calls over 4G.
Your BlackBerry has 4G data but falls back to 2G or 3G for calls? This tool enables 4G calling (VoLTE) on compatible BB10 phones, using your own SIM and built-in dialer. It is experimental: check your phone and carrier before you start.
Download for macOSv0.3.3-r5 · Experimental release · Root access required
01
Tested on one Q10 setupShort calls in both directions and a normal restart
02
Keep the familiar dialerUse your own SIM and number
03
Check your phone first
Set up from your computerWindows x64 and universal macOS packages
01 / HOW IT WORKSSame number. Same familiar way to call.
Not an internet calling app.
Still your phone number.
VoLTE means making calls over your carrier’s 4G network.
This tool enables calling features already in BB10.
It does not provide free calls or an internet calling account.
Built-in calling service
Enable BB10’s built-in IMS service.
Files are checked before a separate copy is modified.
Calls over 4G
Use the phone’s built-in dialer.
Your carrier’s usual charges apply.
Root access is required
Root gives administrator access to the phone. It is needed to enable VoLTE, but you do not need hardware changes or another dialer app.
Modify a copy, not the original
The original /radio/bin/ims_rrm is not overwritten. Native files are checked against the project’s required hashes before installation.
Check first, then install
The tool checks the model, OS, SIM, LTE, network settings and pre-install state. It stops if a required condition is not met.
02 / FROM USB TO 4GFollow the steps, then test real calls.
Set up over USB.
Unplug and test a call.
Use your computer to connect, check and install.
Then make and receive calls on the phone.
A status message alone cannot tell you it works.
- 01CONNECTConnect over USB
Connect your phone
Connect and unlock the phone over USB. Choose “Connect phone” (连接手机); if it fails, follow “Connection help” (连接帮助).
- 02PREFLIGHTStop if checks fail
Check compatibility
The tool checks the model, OS, root access, native files, SIM and network. Resolve any failed checks before continuing.
- 03INSTALL & VERIFYRegistration is not a call test
Install and wait for registration
Confirm your backup and VoLTE plan, then follow the installation steps. Wait for the phone to register with your carrier’s calling service.
- 04ON THE PHONERetest unplugged and after restart
Make and receive real calls
Use the built-in dialer to make and receive calls. Check that both people can hear each other and the phone stays on 4G throughout.
FIELD CHECK / Q10
Your post-install call checklist
“Registered” is a start.
Now test actual calls.
- Make and receive calls with the built-in dialer
- Both people can hear each other clearly
- Stay on 4G throughout the call
- Repeat with the USB cable unplugged
- Repeat after a normal phone restart
Test every item yourself.
The tool will not place calls for you.
Setup with recorded phone testsQ10 SQN100-3 · OS 10.3.3.3216 · China Unicom, Beijing · 460-01
Short calls and a normal restart only; not a guarantee of long-term reliability or support for other setups.03 / KNOW YOUR DEVICESupport varies by model.
Will it work
on your BlackBerry?
This is still experimental, with no universal guarantee.
Your exact model, OS version, SIM and carrier
all affect whether it will work.
Q10One setup tested
BlackBerry Q10
SQN100-3 + OS 10.3.3.3216 + China Unicom Beijing (460-01): short calls in both directions and a normal restart tested. This does not cover every Q10.
- Other Q10 variants
- Experimental use only after all checks pass
- First-time root preparation
- Q10 only; about 15 GB of computer storage
Q20Experimental only
BlackBerry Classic
This tool has not completed call testing on a Q20. Continue only if you explicitly enable experimental use and every technical check passes.
- Startup mode
- Disable autostart; start manually
- Root and SSH access
- Must match the Q20 model
Q30Automatic installation paused
BlackBerry Passport
Network recovery after disabling still needs validation. Checks and report export are available, but automatic install, update, start and restore are paused.
- Available now
- Read-only checks and redacted report export
- What about community call reports?
- Reports exist, but do not validate this tool
Required for every modelOS 10.3.3.3216Valid USIM with VoLTE enabledRoot access and SSHMatching native file hashes
04 / DOWNLOADDownload for your computer, not as an app for your phone.
Which computer do you use?
Get the matching version.
Current public release
v0.3.3-r5 · Experimental prerelease
FOR DESKTOP / 01
Windows
Windows 10 / 11 · x64 · Portable EXE
Download and open the EXE. Required components are included; no separate Python or OpenSSH installation is needed.
The EXE is not Authenticode-signed. Verify its checksum before running it. Launch testing has mainly been on Windows 11 x64.FOR DESKTOP / 02
macOS
Apple Silicon + Intel · Universal DMG
Open the DMG, drag the app to Applications, then launch it. Python and Tk are included; SSH/SCP use the versions built into macOS.
The app and DMG are signed and notarized. The package includes Intel binaries, but has not been run on an Intel Mac for validation.Prefer to run from source?Install Python 3.14 with Tk, then run python tools/gui.py.
05 / OPEN SOURCEOpen code. Honest test results.
Found this useful?
Give it a star.
Help other BlackBerry owners discover the project.
Whether it worked or failed, your model and test results can help.
MIT licenseFull Python / Shell / C sourceNo account, online activation or automatic usage reportingBrowse the source
06 / BEFORE YOU STARTA few things worth knowing first.
Still have questions?
Start here.
For step-by-step setup, installation,
recovery and troubleshooting, open the guide.
Does it work on every BlackBerry?
No. Recorded phone testing covers Q10 SQN100-3 with OS 10.3.3.3216 and China Unicom Beijing (460-01). Other Q10 variants and Q20 are experimental only after all checks pass. Automatic install, update, start and restore are paused for Passport / Q30.
Is root required? Will I lose my data?
Yes. Root means administrator access to the phone. If you already have matching root access and trusted SSH, you do not need to flash again. Unrooted Q10 phones can use the first-time preparation wizard, but flashing erases data and this workflow remains experimental. Back up first.
Is this an internet calling service? Are calls free?
No. It is not an internet calling service and does not offer free calls. You keep your SIM, number and plan, and your carrier’s charges apply. Your SIM needs VoLTE enabled and working 4G data. This project does not unlock SIMs.
Does “IMS registered” mean calls will work?
Not necessarily. It only means the phone has registered with the carrier’s calling service. Test outgoing and incoming calls, audio in both directions and 4G throughout, then repeat unplugged and after a normal restart. Long-term reliability and emergency calls are not fully validated. Do not rely on it as your only way to make emergency calls.
Do I need to install Python?
Not for the Windows EXE or macOS DMG. You only need to install Python 3.14 with Tk if you run from source. Download the package and its matching SHA-256 file from the same release.
Will my phone’s information be uploaded automatically?
No. When you choose to export, the tool saves a redacted check report locally. It does not upload it. Review the report before sharing, and do not include the private folder, private keys or private installation records.