Install Marshmallow Update 20i on T-Mobile LG G4 GuideLG G4 was one of the first devices to receive an update to Android Marshmallow, after the Nexus devices. But for T-Mobile Lg G4 users the update has started to roll out just now. The new update brings the optimizations of Android 6.0 and customizations and tweaks by LG, that are meant to provide you a better user experience.The most talked