ZTE is the fourth largest smartphone supplier in the U.S. and the second largest in the no-contract market. This month they announced the availability of the next generation of the ZMAX series, the ZMAX PRO. It’s available through MetroPCS for the affordable price of $99.00 after instant rebate. The ZMAX PRO breaks new ground as it is the first US carrier supported phone under $100 that features a fingerprint sensor, and a 3400 mAh battery. But seriously, a $99 smartphone? How good can it be?
Well, the ZTE ZMAX PRO will surprise you with its high performance for such a competitive price. The phone is packed with many of the features you would expect from a phone costing significantly more including:
- A monster 6” Full HD LCD Display with resolution of 1920 x 1080.
- Powered by SnapDragon 617 1.5 GHz Octacore Processor, + 2 GB of RAM
- MicroSD slot
- Powerful 3,400 mAh embedded battery that lasts a full day
- Android 6.0.1 Marshmallow OS
- 13MP rear and 5MP front facing cameras
- 32 GB of internal memory upgradeable to 128 MB with the micro SD slot
- Fingerprint sensor for added security
MetroPCS has also added its own app store offering Metro PCS apps that come pre-installed on the device along with a variety of utilities and games, although in reality this is little more than a link to the Android app store. The ZTE ZMAX PRO also features a USB Type-C connector. The cameras have the ability to frame, shoot and edit pictures on the go. Power hungry video games are playable without pause or problems, although some apps can take a little longer to load.
Unusually, the ZTE ZMAX PRO also includes a Qualcomm® Quick Charge 1.0 enabling you to charge the phone up to 40% faster than older phones.
In terms of styling and comfort, although it’s a lot of phone, it’s comfortable to hold in the hand. The soft touch back features the fingerprint sensor, which is fast and accurate. It can also be used to quick launch apps based on the finger that you use and you can also answer phone calls just by pressing the sensor.
The original retail price of the phone is $179.99 but Metro PCS’ mail-in rebate offer whittles it down to just under the $100 price mark which makes this phone an exceptionally good deal.
Unlock your ZTE ZMAX PRO with UnlockBase
Love the phone but you don’t want to stay with MetroPCS? If you would prefer another service provider, UnlockBase is the web’s leading remote unlock service and even though the ZTE ZMAX PRO has only just been launched at the beginning of August, we can unlock it for you, safely, quickly and easily with Device Unlock. Device Unlock is an Android app that allows you to request and apply a mobile device unlock directly from the device. This allows you to automatically apply Mobile Device Unlock to the device without using a manual code. Please note that when your phone is locked with “Mobile Device Unlock” it’s totally useless to order an unlock code. Instead it’s really important to order the unlock of your device using this special service: https://www.unlockbase.com/phone-unlocking-service/metropcs-device-unlock-app-official-unlock/
The Coolpad Group Limited is a Chinese telecommunications equipment company headquartered in Shenzhen, Guangdong, China. It’s the largest smartphone company in terms of sales in the domestic market. With 6 R&D facilities worldwide, the company continues to invest heavily in developing innovative cellular, wireless, and mobile technology products. Producing and launching over 85 different models and 50 million handsets a year.
Released in June of this year, the Coolpad Catalyst 3622A is the fourth phone from Catalyst to reach the US market. It’s a budget, 5” 4G LTE smartphone packed with many of the features of higher cost smartphones, including full built-in video calling, Android 5.1 Lollipop operating system, and a fast quad core processor for keeping in touch with friends and family and entertaining oneself on the go.
The cameras are adequate for everyday use and include a 5mp main camera with LED Flash as well as a 2mp front facing camera.
The phone comes with a 2200mAh battery. MetroPCS offers the Coolpad Catalyst with up to 80% off the retail price, meaning that after the mail-in rebate the phone could be in your hands for as little as $19.00. Not surprisingly, it’s one of the lowest cost phones in their portfolio.
While the Coolpad Catalyst is well equipped, and has 4G LTE connectivity, most of its features reflect its low budget price including the 480 x 854 pixels screen resolution, one of the lowest screen resolutions currently available. RAM memory is also only 1 GB and the low pixel cameras mean photographs could turn out looking grainy.
In terms of looks and aesthetics, for the price you definitely are not going to get a Samsung Galaxy S7, but the phone adopts a curved handheld shape. The front is glass and the glass is contained within a plastic frame. The rear shell, also plastic, wraps around to meet the frame. The display takes on a bright gray hue when off and it stands out starkly from the pitch black bezel. Overall, a reasonable, low cost, big screen entry level solution with above average call and sound quality. Designed for the smartphone newbie, or those that don’t expect or demand too much from their phone.
Unlock your Coolpad Catalyst 3622A with UnlockBase
At this level of pricing you will want to find the best sim only deal you can. If you want to unlock your Catalyst Coolpad from MetroPCS, UnlockBase can do it for you, quickly, easily and economically. We can quickly, efficiently and economically unlock your Catalyst Coolpad 3622A using the Device Unlock App.
Device Unlock App (or RSU Unlock) is an Android app that allows you to request and apply a mobile device unlock directly from the device. This allows you to automatically apply Mobile Device Unlock to the device without using a manual code. When your phone is locked with “Mobile Device Unlock” it’s totally useless to order an unlock code. Instead it’s really important to order the unlock of your device using this special service: https://www.unlockbase.com/phone-unlocking-service/metropcs-device-unlock-app-official-unlock/
Samsung has skipped Samsung Galaxy Note 6 and gone straight to Galaxy Note 7. It’s described as their kitchen sink phone, as contained within its sleek casing is it comes with everything you could possibly need. It comes with a cool almost bezel-less wraparound 5.7” QHD super screen made of scratchproof Corning Gorilla Glass, and strikes a balance between work and play, enabling users to achieve more than what they thought possible on a smartphone. The phone comes with 64GB of internal memory upgradeable to 256GB.
Key attributes of the Galaxy Note 7
- The S Pen: With its new 0.7mm smudge-proof silicon tip everything you write, draw, and edit is sharp and to the point. The S Pen also gives users the ability to easily create and share GIF animations with Smart Select, and new Air Command functions, including Magnify and Translate enable users to zoom in on the screen or convert languages by simply hovering.
- Water repellant: The Galaxy Note 7 repels splashes and dust, and protects against accidental dips in the water of up to five feet for 30 minutes. You can even write when it’s wet with the S Pen.
- Iris Scanner Security: The new iris scanner means you can keep your most valued items and notes secure with superior protection which is unique to you. With the Galaxy Note 7’s advanced biometric authentication you can opt for fingerprint scanner and iris scanning technology. You can also interchange security options depending on how you use your phone. Taking secure purchasing to another level, the iris recognition technology can also be used to authenticate purchases with Samsung Pay.
- Cutting edge cameras: The Galaxy Note 7 has a 12MP 2PD Rear-Facing Camera and a 5MP 2PD Front-Facing Camera which are capable of taking pictures even in dull conditions as they have faster autofocus and a lens that lets in 95% of available light.
- First class entertainment: In addition to the ability to stream HD video in cinema like perspective, by pairing the Galaxy Note 7 with the new Gear VR powered by Oculus, users can experience premium virtual reality almost anywhere. Galaxy Note 7’s Super AMOLED screen and powerful processor delivers a library of apps, photos, games and more to put users at the center of the action.
The T-Mobile deal
Not surprisingly, armed with its handsome new looks, superior functionality and security, it is Samsung’s most expensive phone retailing through T-Mobile at $849.99 if you were to walk in and buy it off the shelf. But if you were to go on contract it can be yours for just $69.99 upfront and $32.50 a month for 24 months. In addition to the phone T-Mobile also tempt you with the choice of a full year of Netflix, a Samsung Gear Fit2, or a 256GB memory card.
Unlock the Galaxy Note 7 today with UnlockBase
The Galaxy Note 7 is Samsung’s top of the line phone, so it makes sense to find the best phone deal to enjoy it. UnlockBase is the web’s leading remote unlock service with the largest database of phones and service providers from around the world.
Even though the Galaxy Note 7 was only launched this month we can still unlock for it you with Device Unlock. It’s an Android app that allows you to request and apply a mobile device unlock directly from the device. This allows you to automatically apply Mobile Device Unlock to the device without using a manual code. Please note that when your phone is locked with “Mobile Device Unlock” it’s totally useless to order an unlock code.
The Android official unlock service for T-Mobile USA is available here:
If you insist on Samsung quality but you don’t want to pay Samsung’s high-end phone prices, the entry level Galaxy Core Prime could be just the phone you’re looking for. It’s an all-plastic phone that manages to look and perform dependably above its weight. Its slim line good looks are inspired by some of Samsung’s bigger, more powerful phones, so while it is a budget model, it doesn’t perform like a budget phone.
The build quality is good, with smooth curves and a brushed metallic bezel and the battery is removable so you can add up to 128GB of storage via the microSD card slot that sits on top of the single micro SIM slot.
The phone runs on a 1.2GHz quad-core processor – a SnapDragon 410, with Adreno 306 graphics, 1GB of RAM and 8GB of storage (5.3GB is usable). In general use the phone performs at a good rate but for some heavier apps there can be slight delays when launched. At 4.5” inches, the WVGA screen is also smaller than some of the currently popular 5.5” phablet style phones, but it certainly makes up for lack of size with ease of portability as it could comfortably fit into a shirt pocket, so it’s perfect to carry around for summer months wearing just shirtsleeves.
The Samsung Galaxy Core Prime has 4G LTE data speeds so you can stream high-quality videos, video chat and share photos with friends. It runs on the Android 5.1 Lollipop operating system with the TouchWiz interface to make navigating simple.
As far as picture power is concerned, the phone has a front facing 2MP camera for easy selfies and a higher quality 5MP camera on the back with Auto Focus and a rear LED flash.
Battery power is boosted when it’s in Ultra Power Saving Mode; the battery continues to power the phone even when it’s critically low. It works by turning most of your screens to black and white and shuts off nonessential apps, so your smartphone still works when you need it.
T-Mobile USA was selling the Galaxy Core Prime for cash for $139.99 or just $5.84 per month with no money down.
Unlock your Samsung Galaxy Core Prime (SM-G360T) with UnlockBase
You may want the phone, but not necessarily the service provider, but with UnlockBase, that’s not a problem. UnlockBase is the leading online remote unlock site, with the largest database of phones and service providers around the globe. You can unlock your Galaxy Core Prime quickly, easily and cost efficiently using the Mobile Device Unlock App, the Android official unlock for T-Mobile USA: https://www.unlockbase.com/phone-unlocking-service/tmobile-device-unlock-app-official-unlock/
Device Unlock is an Android app that allows you to request and apply a mobile device unlock directly from the device. This allows you to automatically apply Mobile Device Unlock to the device without using a manual code. Please note that when your phone is locked with “Mobile Device Unlock” it’s totally useless to order an unlock code. Just ensure your phone is clean, and not reported as lost or stolen.
With its Super AMOLED display, the highly successful and value for money mid-range Samsung Galaxy J series offers quality and performance capabilities that would have been considered high-end even just two or three years ago. The J7, bigger brother to the J5, enables you to upgrade your photo-viewing, video-watching and gameplay sessions with rich, true-to-life color reproduction and an exceptional contrast ratio for deeper blacks.
The Samsung Galaxy J7, which was introduced a little earlier this year, features an immersive 5.5-inch HD Super AMOLED display, a 1.7GHz Octa-Core Exynos 7870 SoC, with 2GB of RAM, 16GB of on-board storage, a 13-megapixel rear camera, a 5-megapixel front camera, and a 3,300 mAh battery. MicroSD support is also included, as is LTE network connectivity. Running on Android 6.0.1 Marshmallow, T-Mobile and MetroPCS, the two major service providers that stock the J7, have different marketing strategies to entice you to buy the phone, and both of them are tempting.
T-Mobile USA offers the Samsung Galaxy J7 for only $239.99, and comes with a second phone free provided you pay with a prepaid MasterCard credit card. While MetroPCS USA does not offer a free second phone but opts instead for a super low price for the J7 of just $179.00.
Whether you’re watching an HD streaming movie or reading a book, the Samsung Galaxy J7 is more involving thanks to the large 5.5″ HD Super AMOLED display. And while the 13MP main camera captures clearer photos, the 5MP front camera gives you fast and flattering selfies even in low light conditions. The 3,300 mAh battery has the power to keep up with your demands. The phone comes with in-built Ultra Data Saving which compresses data and restricts background apps from chewing up too much data, thereby supplying an unfailingly fast and cost efficient 4G experience.
Unlock the Samsung Galaxy J7 with UnlockBase
UnlockBase, the web’s leading unlock remote phone unlock service, can quickly and cost efficiently extricate you from T-Mobile, MetroPCS or just about any service provider around the world from which you wish to unlock. If your Samsung Galaxy J7 comes from MetroPCS USA or T-Mobile USA then it’s most likely your Cell Phone is locked with “Device Unlock App” and not asking for an unlock code (SIM Network Unlock PIN). In this situation it’s really important to order the unlock of your device using this special service:
For T-Mobile USA:
For MetroPCS USA:
Most customers are able to quickly and cost effectively permanently unlock their phone within 5 minutes using the app. However, should any problems arise, UnlockBase also offers a 24/7 365 day a year service center manned not by robots but living, breathing human beings ready day or night to help answer your questions. UnlockBase also offers a 100% money back guarantee if you are not delighted with the service, and, should you find a genuinely cheaper like for like deal elsewhere UnlockBase will either match it or better it.
Today we released the version V18.104.22.168 of the “UnlockBase Cable Unlock Software” adding Direct Unlock support by Cable for Samsung Cell Phone from Sprint USA. These used to be “Hard to Unlock” but only until today! Now you can unlock Samsung from Sprint with our exclusive software using the original USB Cable of your Samsung and a computer running under Window. Cherry on top: NO ROOTING involved in the process! The exact list of supported models from Sprint are showed below:
- Samsung Galaxy S4 [SPH-L720],
- Samsung Galaxy S5 (Sprint) [SM-G900P],
- Samsung Galaxy S6 (Sprint) [SM-G920P],
- Samsung Galaxy S6 Edge (Sprint) [SM-G925P],
- Samsung Galaxy S6 Edge+ (Sprint) [SM-G928P],
- Samsung Galaxy S7 (Sprint) [SM-G930P], HOT
- Samsung Galaxy S7 Edge (Sprint) [SM-G935P], HOT
- Samsung Galaxy Note 3 (Sprint) [SM-N900P],
- Samsung Galaxy Note 4 (Sprint) [SM-N910P],
- Samsung Galaxy Note Edge (Sprint) [SM-N915P],
- Samsung Galaxy Core Prime (Sprint) [SM-G360P], HOT
- Samsung Galaxy Tab 3 [SM-T217S].
For more details about “UnlockBase Exclusive Software” please check:
Software Official FAQ: https://www.unlockbase.com/cable-unlock/unlockbase-software-faq/
List of the 636 Supported Models: https://www.unlockbase.com/cable-unlock/supported-models/
Official ChangeLOG & Download: https://www.unlockbase.com/cable-unlock/change-log-software-download/
You can order a license to unlock one cell phone here: https://www.unlockbase.com/cable-unlock/
Or from the section “Cable Unlock” of your UnlockBase Wholesale account…
This is an oldie but goodie from Sony Xperia, and was originally released in the United States in October 2014. Yes, in cellphone terms that’s an ice age ago, but the Sony Xperia Z3 remains a popular phone to unlock, and a fast seller on eBay and other auctions sites.
The Xperia Z3 hails the entry for Sony of design aesthetics such as a curved bezel. Like its predecessors, the Xperia Z3’s design consists of a metal frame with a glass backing; with the metal frame being rounded, while the device itself is slightly slimmer than the earlier Z2. Equipped with a near phablet sized 5.2” FHD screen, the Sony Xperia Z3 carries slightly higher IP ratings for water and dust-proofing than the Z2. With a 1080p display and a density of 424 ppi, it also features Sony’s “Triluminos” technology.
Incorporating years of Sony camera expertise, the Xperia Z3 includes Cyber-shot and Handycam technologies for bright, crisp, and super sharp photography. The rear facing camera is a mighty 20.7 Megapixels with a Sony Exmor RS image sensor, along with improvements to “SteadyShot” and “Intelligent Active” modes. It also has ISO 12800 sensitivity, enabling you to capture moments in low light.
The phone comes with a 2.5 GHz quad-core Qualcomm Snapdragon 801 system-on-chip with 3 GB of RAM, with Google Android 6.0 (Marshmallow). The Z3 includes a non-removable 3100 mAh battery with up to two days of battery life. The phone runs on a single nano sim card upgradeable to 128GB via the microSD slot.
Unlock your Sony Xperia Z3 with UnlockBase
At the time of its release in the fall of 2014, the phone was compared favorably with the Samsung S4. The phone was on the market offered by T-Mobile in black, and some of these phones are still locked with an RSU App. If this is not what you want and you are keen to get rid of it, UnlockBase can help.
With the largest database on the web for phones and service providers, UnlockBase will not be beaten on price. For just $29.90 we can unlock and free up your Sony Xperia X3 in less than 24 Hours using the official Android Official Unlock for T-Mobile USA. Before you order the app make it’s important to make sure your phone is free of any viruses and is not blacklisted, or else the app will not be able to help you.
To Unlock your Sony Xperia Z3 (D6616) from T-Mobile USA please follow this Link:
The new Samsung Galaxy S7 is slim, but in a big way. It looks the part, with a 5.1 inch Quad HD Super AMOLED screen protected by scratchproof 3D glass. The sleek glass and metal, refined and streamlined with ergonomic curves, ensures a comfortable, secure grip. As for performance, it’s huge, with more advanced cameras, more responsive software functionality and superb connectivity to enjoy the full gamut of products, services, and online experiences.
The phone comes with a microSD card slot upgradeable to 200GB and fast wired and wireless charging technology.
As a practical phone to carry with you, the Samsung Galaxy S7 received an IP68 rating to make it water resistant to spills, splashes. Even dropping it in water won’t slow down the Galaxy S7.
Taking pictures takes on another dimension. Compare it with other phones of lesser quality and immediately notice the revolutionary world first of Dual Pixel technology which produces crisper, richer colors from a brighter lens with a wider aperture for great shots even in low light. The front facing camera is 5MP while the rear camera offers 12 MP with fast auto focus.
Gaming performance has also gone large with big updates to software and the optimization of gaming performance. The 4GB RAM and 32GB ROM processer and bigger battery capacity puts PC power in the palm of your hand to ensure longer playing time, while the internal cooling system keeps the device from overheating. The new add-on for gamers, Game Launcher, allows users to manage battery consumption and minimize notifications.
The 4G LTE Galaxy S7 offers a seamless mobile experience with the new Gear S2 Classic to monitor fitness, or the connection with Gear VR to “travel” the world. Additionally, Galaxy S7 users can make payments with Samsung Pay, secured by Samsung KNOX. It’s easy-to-use and accepted almost anywhere, making mobile payments available to more merchants and consumers.
The Galaxy S7 is available at T-Mobile for $669.99 or $27.92 per month for 24 months with $0 down. For a limited time, you can also get 50% off a Samsung Tab A 8.0 via Prepaid MasterCard™ Card when you purchase a select Samsung Galaxy Smartphone. MetroPCS offer the Samsung Galaxy S7 for $649.00 or with monthly payments starting from $30.00.
Unlock your Galaxy S7 with UnlockBase
No matter how much you love your phone, you don’t have to be stuck with your service provider. UnlockBase, the web’s leading remote cellphone unlocking service, is here to help. We can quickly, efficiently and economically unlock your Samsung Galaxy S7 using the Device Unlock App. Device Unlock is an Android app that allows you to request and apply a mobile device unlock directly from the device. This allows you to automatically apply Mobile Device Unlock to the device without using a manual code. When your phone is locked with “Mobile Device Unlock” it’s totally useless to order an unlock code.
Unlocking your Samsung Galaxy S7 costs just $24 if from MetroPCS, and $29.9 if from T-Mobile USA . Should you find a genuine cheaper offer to unlock your phone elsewhere we promise to match or better it. Before using the app, you need to be sure your phone is 100% clean, not stolen or blacklisted.
To Unlock your Samsung Galaxy S7 (SM-G930T) from T-Mobile USA please follow this Link:
To Unlock your Samsung Galaxy S7 (SM-G930T) from MetroPCS USA please follow this Link:
The new LG G5 is the first modular smartphone from the South Korean company, and it comes in an all-metal design, so you can upgrade it with accessories, but still appreciate the sleek look and feel. Key new features for the LG 5 include a uni-body design, an easy to slide-out battery, and MicroSD card slot, so you can add more power and memory quickly and easily. The screen is a 5.3” Quad HD screen with a high-contrast display with daylight mode.
As far as cameras are concerned, they are dual rear-facing with standard and ultra-wide-angle lenses. There’s an 8MP camera at the front and 16MP on the rear. The 135° lens means you can capture a sprawling skyline, a stadium concert, or the full length of a beach. You can also zoom out ultra-wide (0.5X) – it’s a first for a smartphone. You can take a variety of photos and videos from a micro close-up to a macro scene by simply pinching the screen.
The phone measures 149.4 x 73.9 x 7.7mm, and unlike its G series predecessors, it’s not curved and is smaller and easier to hold. Reaching all corners of the screen is now possible.
The LG 5 features Always-on display so there’s no need to press the button to check the time, date, or notifications, just a glance gives you the information you need.
Despite the Always-on display, to minimize power consumption, LG redesigned the display driver IC memory and power management function so that the display’s backlight only illuminates one small part of the overall display. This means the Always-on Display requires only 0.8 percent of the battery’s full capacity per hour to remain functional. With consumers turning on their smartphones up to 150 times a day mostly to just check the time, the G5’s Always-on Display has been designed to make a notable difference in the life of the battery over the course of the day.
For greater connectivity, the LG G5’s Friends Manager app enables you to connect, interact and play with all your LG owning friends.
T-Mobile is currently selling the LG 5 for $629.99 or for $26.25 a month for 24 months with $0 down.
Unlock your LG G5 (H830) with UnlockBase
If you want the freedom to choose your own service provider, no problem. UnlockBase, the web’s leading remote cellphone unlocking service, is here to help. We can quickly, efficiently and economically unlock your LG5 using the Device Unlock App.
Device Unlock is an Android app that allows you to request and apply a mobile device unlock directly from the device. This allows you to automatically apply Mobile Device Unlock to the device without using a manual code. When your phone is locked with “Mobile Device Unlock” it’s totally useless to order an unlock code. Unlocking your LG 5 costs just $29.90. Before using the app, you need to be sure your phone is 100% clean, not stolen or blacklisted.
To Unlock your LG G5 (H830) from T-Mobile USA please follow this Link:
Most phablet fans would agree the Samsung Galaxy Note series is the daddy of all the phablets, consistently high quality and innovative as well as slick and easy to use. Samsung believe with the Galaxy Note5 they have delivered the best version yet.
Billed as the most powerful and beautiful model yet, with a 5.7 inch Quad HD Super AMOLED (518ppi) screen, it’s still as big as ever, but now slimmer, framed by sleek aluminum metal and glass. The useful S Pen can be used on a sleek flat surface while the phone’s dual-edge back lies comfortably in the palm of your hand. In fact, the new S-Pen is now even more like an actual pen, and writes like one too on the surface of the screen. The screen is made from super tough Gorilla glass.
The 32GB Samsung Galaxy Note 5 comes with a wireless charger. Just rest the phone on the charger and it’s fully powered in 120 minutes. The advantage of the wireless charger is that you can keep it with you at all times, so even when you are travelling or stopping for refreshments, your phone can stay topped up to the max.
There are also a number of entertainment options with the Galaxy Note5 that a new dimension not just to using your phone, but the way you entertain yourself and your friends. This includes the ability to share your own experiences with others in real time by turning on your camera and using Live Broadcast that streams on You Tube to live the moment together.
The camera also features Video Digital Imaging Stabilization in addition to Optical Image Stabilization technology so there’s no camera shake, it’s so steady it’s as if the camera is locked off, not hand held. You can record videos in 4K / UHD.
There’s also a 16 MP rear camera and 5MP front camera. The camera’s Advanced Selfie technology and range of effective filters mean photos are super sharp. Pictures and videos can then be shown on a TV screen with just one tap.
Connectivity is also easy with Galaxy Note5. SideSync enables you to respond to texts and get important reminders and alerts while you’re on your computer.
In certain countries you can also take advantage of Samsung Pay, a hassle-free and secure way to pay with fingerprint authentication and additional layers of security
The Samsung Galaxy S5 retails at $699 cash or $29.17 a month for 24 months from T-Mobile with $0 down.
Unlock your Galaxy Note 5 with Unlockbase
If you’re happy with everything about your choice of phone, but not your cellphone provider, you need to get in touch with Unlockbase. UnlockBase is the leading online remote unlock site, with the largest database of phones and service providers around the globe. You can unlock your Galaxy Note5 quickly, easily and cost efficiently for $29.90 using the Mobile Device Unlock App, the Android official unlock for T-Mobile USA. Just ensure your phone is clean, and not reported as lost or stolen.