Want to SIM unlock your T-Mobile LG G4? Well, there’s an easy way if you’re in for flashing a custom ROM. LG G4 hardware is same for all its GSM based variants, meaning if you could flash firmware of international LG G4 on your T-Mobile variant, then perhaps, you’d unlock the T-Mobile network restriction on your G4 and use SIM from any carrier in the world.

Developer MicroMod777 has ported over the international LG G4 firmware to the T-Mobile LG G4 and it does the SIM unlock job without any flaw. Plus, as you’d expect, it’s pre-rooted as well and come as a recovery flashable zip.

However, you’ll have to trade the WiFi calling functionality since it’s an exclusive feature of T-Mobile and we’re removing the T-Mobile software in favor of the global software.

Also, since this is the first release of this custom ROM, there are some bugs present on the ROM. Like you can’t make HD calls or use LTE while calling, but these are minor bugs and should sort out within the next few releases.

To install the custom ROM, you’d need root access first and TWRP recovery, which is required for flashing a (.zip) custom ROM file. Below are helpful guides for getting both root and TWRP on your T-Mobile G4.

[icon name=”hand-o-right” class=”” unprefixed_class=””] Root T-Mobile LG G4  |  T-Mobile G4 TWRP recovery

Once you’ve TWRP recovery installed, download the ROM file from the link below and flash it using the custom recovery with a full wipe / factory reset.

[icon name=”download” class=”” unprefixed_class=””] Download Global ROM for T-Mobile G4

[icon name=”list-ol” class=”” unprefixed_class=””] How to Flash a Custom ROM using TWRP recovery

For updates and bug fixes, be sure to visit the original development page for this ROM.