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BLU

BLU Bold K12 | 2025 | Unlocked | 6.8” HD+ 120Hz Infinity Display | 50MP Main + 8MP Selfie Cameras | 128GB Internal Storage | US Version | US Warranty | Silver

  • Based on 79 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Sep 25
Order within 4 hours and 58 minutes
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Color: Silver


Features

  • GSM Unlocked: Enjoy seamless connectivity with your preferred GSM carrier. Compatible with T-Mobile, Metro, Mint Mobile, AT&T, Cricket, and other GSM networks. SIM card not included. For network compatibility, please check with your carrier. Note: Not compatible with Verizon Network.
  • Bold Design, Bigger View: Experience everyday content on a large 6.8 HD+ 120Hz display. From streaming and browsing to social media, enjoy clear visuals in an immersive, modern design.
  • Power That Lasts: Stay connected all day with a powerful 5,000mAh battery that keeps up with your daily routine without needing a recharge.
  • Capture Your Moments: Take stunning photos with the dual 50MP main camera with flash and enjoy clear selfies and video calls with the 8MP front camera perfect for everyday memories.
  • Smooth Performance, Everyday Use: Designed for reliable daily performance, the BOLD K12 handles multitasking, entertainment, and browsing with ease for a smooth, responsive experience.
  • Secure & Simple Access: Unlock your phone quickly and securely with the side-mounted fingerprint sensor, keeping your information private and accessible.
  • Box Content: BOLD K12, Rugged Case, Glass Screen Protector, Charger, Type-C Cable, Quick Guide, Headphones, SIM Key and Sticker.

Description

Stay connected longer with a powerful 5000mAh battery designed to keep up with your day. From streaming and gaming to calls and browsing, enjoy reliable all-day performance without constantly reaching for the charger. Unlock your phone instantly with the responsive side-mounted fingerprint sensor. Conveniently placed for quick access, it provides secure and effortless unlocking right when you need it. Enjoy the latest Android experience with improved performance, enhanced privacy controls, and smarter features designed to make everyday tasks easier, faster, and more intuitive.

Brand: BLU


Operating System: Android 15


Memory Storage Capacity: 128 GB


Screen Size: 6.8 inches


Resolution: 1280 x 720


Refresh Rate: 120


Model Name: K12


Wireless Carrier: Unlocked


Cellular Technology: 4G


Connectivity Technology: 4G


Operating System: Android 15


Memory Storage Capacity: 128 GB


Color: Silver


SIM Card Slot Count: Single SIM


Connector Type: USB Type C


Form Factor: Smartphone


Biometric Security Feature: Fingerprint Recognition


Water Resistance Level: Not Water Resistant


Headphones Jack: 3.5 mm


Flash Memory Supported Size Maximum: 128 GB


Brand: BLU


Built-In Media: Phone Case


Warranty Description: 1 year limited US Warranty


Manufacturer: BLU


UPC: 848958044710


Unit Count: 1 Count


Screen Size: 6.8 inches


Resolution: 1280 x 720


Refresh Rate: 120


Display Type: LCD


Display Resolution Maximum: 2340x1080


Wireless Provider: Unlocked


Cellular Technology: 4G


Connectivity Technology: 4G


Wireless Network Technology: GSM


Front Photo Sensor Resolution: 8 mp


Rear Facing Camera Photo Sensor Resolution: 50 mp


Number of Front Cameras: 1


Battery Power: 5000


Video Capture Resolution: 1080p


GPS Geotagging Functionality: False


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Sep 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Good Bang for your Buck
Color: Champagne Gold
Didn't expect much for under $100 but this one's held up well. Screen is big and surprisingly smooth. Battery easily lasts me a full day, sometimes more. Storage is plenty, and there's a microSD slot if you need extra. Camera's decent in daylight, nothing special in low light, but that's expected at this price. Fingerprint unlock is quick and reliable. Comes with a case, screen protector, charger, and earphones in the box, which was a nice bonus. ... show more
Reviewed in the United States on August 10, 2026 by dan
    • Great Value and Easy to Set Up
Color: Champagne Gold
I bought this as a replacement for my old phone after I lost it, and it has been a great choice. It was easy to set up, and I was able to recover my data from my cloud backup without any trouble. The phone looks great, feels well made, and is surprisingly fast for the price. I mainly use it for texting, calls, and browsing the internet, and it handles everything smoothly. I also appreciated that it came with lots of accessories, which made it feel like an even better value. If you're looking for a good-looking, dependable phone at a great price, I would definitely recommend it. ... show more
Reviewed in the United States on July 26, 2026 by Robert Stango
    • My K12 Experience
Color: Silver
I am not sure where to start I brought this phone for my wife. The front face of the camera glitched and had purple lines going through it I could not see her on video chat. Back of the camera sucks I am not even going to lie. When an image did appear it was super dark and she was in the light. I have owned two previous Blu phones and none of them have ever done what this K12 has done. I tried using the phone in the store on video and it did the same thing and frozen. GPS stalled and did not work properly at all had to pull over and reboot phone. After reboot still did not work. This is something I should not have had to do. GPS froze and stopped working in the middle of deliveries, dropping off packages, etc. Good thing we remembered we had another phone and got home safely. We can go on and on with the problems we have had maybe it's just a bad phone. ... show more
Reviewed in the United States on June 3, 2026 by Kindle Customer
    • Beautiful phone, everything you need in the box!
Color: Champagne Gold
Got the BLU K12 in gold and I like it so much right out of the box. The gold color is really pretty, so happy! Also everything I needed was actually in the box. No need for separate orders or waiting for a screen protector. Makes it a great Value. Camera's been solid too! Will update if anything changes but right now, no complaints. ... show more
Reviewed in the United States on August 7, 2026 by D.g.
    • Great phone for the price...
Color: Black Blue
I have been buying BLU phones for my wife and I for over 10 years now. We have never had a problem with any of them, now my wife gets a new one about every 2 years where the one I had was every bit of 6 years old it was a G60 and the only reason I replaced it was it was running android 9pie and I needed an update bad. This Bold K12 is really nice and fast and runs the apps I need with android 15. Now I'm just an average user but after 2 days of use I'm between 50-60% battery charge for the week I've had it. The few calls I've had sound nice and clear with good volume and it scoots around on the internet just fine, well a lot better than my old phone. ... show more
Reviewed in the United States on June 30, 2026 by David
    • Great backup phone for me!
Color: Champagne Gold
I was surprised. This phone replaced my Blu G91, it is 5 years old and still works fine. The new phone was cheaper and I didn't expect much. The big gain was going from android 10 to 15. Google had started complaining telling me to update my system on the old phone. Plus - K12 is a little faster than G91 K12 has a bigger display. Both have 128 GB and accept another 128 GB SD card. K12 has aptX, no where was that stated, showed up when I paired with some sennheisers. Pixel watch transferred easily. K12 had a little better wifi (ac) and better Bluetooth (5) but both a rev back from current. Minus - Lots of bloatware auto installed from Blu, disabled that. Some bloatware from Google but you can uninstall it. Have to disable the bloatware install with every system update. Defaults to 3D sound on Bluetooth or wire, had to turn that off every time. K12 has same size battery as G91 My use for the phone is mostly texting and music streaming. I use red pocket for carrier, $45 a year. I run the phone in the car for deezer, spotify and siriusxm. I use less than 500 mb a month on cell, my plans limit, but that is why it is $45 a year. Most of the time it is home on wifi using Google voice for texting and calls. Updated the op system and then moved the Sim card, pretty simple, working fine. The K12 is a good emergency phone, like my G91. Very pleased. BLU makes a reasonably priced phone that actually works. Battery lasts a few days. My 3rd Blu phone. I'll get a 4th in another 5 years.. ... show more
Reviewed in the United States on April 30, 2026 by mike in mass
    • Easy to set up!
Color: Phantom Pink
Review Image by Anais Dominguez
Review Image by Anais Dominguez
Review Image by Anais Dominguez
I recently got this phone and loved how easy it was set. I love how easy it was to connect to all my Google accounts and I have everything in one place. It was easy to set up my sim and all my apps, the phone is user friendly. I'm a sucker for anything pink so being able to get a pink phone was truly the cherry on top of this purchase. I use the phone mostly for work; checking emails, taking photos, and everything works really well! ... show more
Reviewed in the United States on August 11, 2026 by Anais Dominguez
    • Don't buy
Color: Champagne Gold
This is not a unlocked phone.. It will not work in USA .. Was on phone several times with Straight Talk before they found phone was locked Waste of money...
Reviewed in the United States on September 4, 2026 by Kindle Customer

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