The first option is by USB Cable:

This Samsung Sprint unlock service is the only option to unlock these phone models and make it work both in the USA and abroad on any gsm network. Please make a backup of the important information you have on the phone before the unlock because the phone will need a factory reset.

This unlock is done online by USB cable, not by codes calculated from IMEI.

Advantages of the USB cable method

-it costs less than a code generated from IMEI
-it takes less time (15-20 min), plus T-mobile Verizon Sprint Samsung cannot be unlocked by unlock code by IMEI
-100% guaranteed to work
-this unlock method will work for any sprint galaxy, including those in contract

The second method is by Device Unlock app:

This is the official unlock method using the T-Mobile device unlock App

Did you try that before and did not work? We will activate your T-Mobile device IMEI and the application will permanently unlock your phone. This is the simplest method available, no need to flash any firmware and is totally safe.

Please verify that you have the Device Unlock app on your device, connection to Wi-Fi and press Permanent to unlock. If you get the message “Unlock Failed: This mobile wireless device is not eligible for unlock….” then your phone will be unlocked with this service. If you get any other message, please contact us before buying this, as we cannot refund it.

Advantages of the Device Unlock app method

– you only need the IMEI number
– the unlock is official and permanent, so it won’t affect your warranty
– it works for any android version, including 7.0. No root needed

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Supported models for the USB method

-Samsung Galaxy Note 10 n970u Note10+ n975u locked to T-mobile Verizon Sprint Boost

Supported models for the Device Unlock app method

Any new T-mobile Android device that has the Device unlock application preinstalled such as:


Samsung Galaxy S9 (SM-G960U),
Samsung Galaxy S9 Plus (SM-G965U),
Samsung Galaxy Note 5 (SM-N920T),
Samsung Galaxy Note 7 (SM-N930T),
Samsung Galaxy Note 8 (SM-N950T),
Samsung Galaxy Note 9 (SM-N960U),
Samsung Galaxy Grand Prime (SM-G530T),
Samsung Galaxy Core Prime (SM-G360T),


LG Leon LTE (H345),
LG Stylo 2 Plus (K550),
LG Stylo 3 PLUS (TP450),
LG Stylo 4 (Q710TS),
LG V10 (H901),
LG V20 (H918),
LG V30 (H932),
LG V30+ (H932U),


ZTE Avid Plus (Z828),
ZTE Avid Trio (Z833),
ZTE Obsidian (Z820),
ZTE Zinger (Z667T).
ZTE Zmax Pro (Z981).


Sony Xperia Z3 (D6616);

And many other models!