Tag (archive title) SIM

How to SIM Unlock Galaxy S4 – T-Mobile SGH-M919 and AT&T SGH-I337

Galaxy S4 Service Menu

How to SIM Unlock Galaxy S4 SGH-M919/SGH-I337 Update 27 Feb, 2016: These methods to SIM unlock the Samsung Galaxy S4 do not work with recent firmware versions. Fortunately, if you have a T-Mobile variant, you can now easily unlock it using their unlock app, as long as it is eligible. And their eligibility requirements are very minor. […]