T-Mobile's "Device Unlock" app will unlock your phone, if you have this one model

Now that President Obama has signed the bill to make smartphone unlocking legal, of course T-Mobile would be the first of the four major U.S. carriers to offer a related app. Called "Device Unlock," the app is available in the Google Play Store for Android flavored handsets. Right now, it is only useful for those with the Samsung Galaxy Avant, which means that a vast majority of T-Mobile customers cannot employ "Device Unlock" at this time. After a few updates, we're sure that the app will work with more models.

Just to show you how this does work, let's pretend that you do own a Samsung Galaxy Avant (unless you do happen to own that model). You will have the option for a temporary or permanent unlock. The first option is for those going overseas for business or vacation and plan on using a GSM carrier in the country they are traveling to. If you select permanent, you will never be able to stuff the genie back into the bottle. In other words, once you unlock your phone permanently, you cannot lock it again.

Remember that your contract has to have been completed, and your phone cannot have been reported stolen for you to be able to unlock it. And while the app is quite limited now, eventually it should cover more models. You might want to check in every now and then to see if your phone has been added.

source: DeviceUnlock via RedmondPie

Related phones

Galaxy Avant
  • Display 4.5" 540 x 960 pixels
  • Camera 5 MP / 0.3 MP VGA front
  • Processor Qualcomm Snapdragon 400, Quad-core, 1200 MHz
  • Storage 16 GB + microSDXC
  • Battery 2100 mAh(13h 3G talk time)



1. Daytonadave17

Posts: 54; Member since: Oct 26, 2013

What's the point if its for one device? A sucky device at that? and does this mean we can unlock our bad imei phones to use again????? Answer please!!?

5. sniper1087

Posts: 537; Member since: Dec 31, 2011

that is a no, reason is you got a bad imei phone is because was reported lost/stolen or broke a contract and termination fee was not paid, therefore the phone you have is not rightfully yours, and bad imeis once reported will not be removed from the list.

8. hurrycanger

Posts: 1775; Member since: Dec 01, 2013

It's the latest device on T-Mobile. No surprise that it gets the app first. "Sucky"? No. "Bad imei", something seems wrong here, but it ain't one of my problems. :3

2. 0xFFFF

Posts: 3806; Member since: Apr 16, 2014

"If you select permanent, you will never be able to stuff the genie back into the bottle. In other words, once you unlock your phone permanently, you cannot lock it again." As unlocking is helpful for the customer, why worry about re-locking the phone?

10. hurrycanger

Posts: 1775; Member since: Dec 01, 2013

I've read some comments on different sites on this app and quite a few people think if you don't lock it to T-Mobile again, you won't be able to use T-Mobile 4g or T-Mobile service in general. Yep, it's one of those "I don't want to live on this planet anymore" moments.

3. meanestgenius

Posts: 22504; Member since: May 28, 2014

Only one device? Meh...

4. networkdood

Posts: 6330; Member since: Mar 31, 2010

A lot of their devices are easy to unlock, btw

7. true1984

Posts: 870; Member since: May 23, 2012

Not as easy as htc's. Or LG's. Or Sony's...

13. Planterz

Posts: 2120; Member since: Apr 30, 2012

He's referring to T-Mobile phones, not specific brands.

6. true1984

Posts: 870; Member since: May 23, 2012

If Samsung continues this trend with their flagships, I might start buying their phones again

9. PapaSmurf

Posts: 10457; Member since: May 14, 2012

This news was reported a few days ago lol. PA is getting slower and slower... Anywho, T-Mobile is only testing it on the Galaxy Avant for now, but like VoLTE, will expand it to more models in the coming months. The S5 for sure is due to be compatible with the app by the end of Q3.

11. Planterz

Posts: 2120; Member since: Apr 30, 2012

Will we see a review for the Avant? We never got one for the Galaxy Light (I understand it's just one phone on a specific carrier, and thus not a priority), which the Avant is replacing. But the Avant, being inexpensive and easily unlockable, and having pretty decent specs for the price, and curiously supporting all of AT&T's bands, it'd be good to see a review for this phone. Especially compared against its most obvious competitor, the Moto G LTE.

12. techloverNYC

Posts: 601; Member since: Nov 20, 2012

I wish T mobile will use those more popular bands for network. Using unlocked phones on T mobile is such a painful experience, the 4g if its there is so limited. The fact that edge network (2g speed) still exist for T mobile network shows how behind they are in coverage.

14. Planterz

Posts: 2120; Member since: Apr 30, 2012

Buying/leasing wireless spectrum is insanely expensive. Hundreds of millions of dollars, if not billions. T-Mobile is working on expanding their bands - they've already picked up 700MHz band 12, and are in the process of implementing it (it's gonna take a while though). Coverage is a matter of towers, not spectrum, and yeah, T-Mobile definitely as work to do outside of the cities.

16. andynaija

Posts: 1265; Member since: Sep 08, 2012

That's also why you have to buy an unlocked phone that is compatible with their current bands.

15. hameed1989

Posts: 47; Member since: Aug 29, 2012

Will the unlocking cost money?

17. javy108

Posts: 1004; Member since: Jul 27, 2014

Galaxy Avant :3

18. johnadam

Posts: 1; Member since: Feb 04, 2016

T-mobile= My Samsung Galaxy S6 (SM-G920T) suffering a Troubleshoot “Mobile Device Unlock” and i was to worried because i don't know how to fix it. I tired to contact a lot of of customer service care but it doesn't help . Suddenly my friend refer me on this blog: blog.unlockbase.com/mobile-device-unlock-app-troub​leshooting/ and yes ! this blog solve my problem :)

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