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Boost Max+

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Model Name: N9521

Take your mobile phone experience to the max!

This smartphone gives you maximum screen size for a superior experience. The Boost MAX+ boasts a 5.7-inch HD IPS Display with Corning® Gorilla® Glass, Dolby Digital® Plus sound, 4G LTE and Android™ 5.1. Take your mobile phone experience to the MAX.

Buy from Boost Mobile

Smart Viewer for Multi-Tasking

With the extra-large 5.7" display on the MAX+, why wouldn't you wan to try to do two things at once? With Smart Viewer, you can run two applications at the same time - wach YouTube and text, or email while enjoying your favorite Netflix movie. You choose how you want to double up!

Second Generation Updates Worth the Wait

Coupled with a large 3400 mAh battery with wireless charging capabilities, increased memory and storage, and a Qualcomm Quad-Core chipset, the Boost MAX+ provides the agility and power that can perform when life demands it.

Quality Connection When You Need

When you're ready to connect over the phone, you'll enjoy the HD voice quality provided over Boost Mobile's 3G and 4G LTE network. Or, if you want to connect over video, the phone features a quality 8 MP rear camera and 1 MP front camera.

Type Smartphone
Form Factor Candy Bar
Height 6.5"
Width 3.25"
Depth 0.4"
Weight 6.87oz
Physical Size 5.7"
Technology HD IPS Display with Corning® Gorilla® Glass
OS Android 5.0 (Lollipop)
Main Resolution 8MP
Video Capture Full HD 1080p
Front-Facing Resolution 1MP
CPU 1.2GHz Quad-Core Processor
Capacity 3400 mAh
Talk Time* 16 hours
Wireless Charging Capable (with available accessory)
Internal 2 GB + 16 GB ROM
Expandable Up to 64 GB
Data Speed 3G/4G LTE
Mobile Hotspot Yes
Headset Jack 3.5mm

Customer Reviews

5 Item(s)

per page
Great phone Review by Damien
I love this phone, I only had it for a few weeks. I bought this phone online through my carrier website boost mobile and so far the only problem I have is the boost mobile zone app keeps telling me there's a software update and I tried to update it multiple times it just says everything is updated but boost zone keeps saying there is an update. (Posted on 12/23/2016)
Accessories please Review by Victor
I would like to know why I've had this phone for 4-5 months already and searched high and low and still can't find quality accessories. Like a phone case that won't break after a few days and/or a screen protector. (Posted on 6/19/2016)
Why? Why? Why? Review by Victor
I currently have ZTE boost max and ZTE boost max+. My only problem is the boat max+ for some reason all of my music is in alphabetical order despite all of my music being numbered. Why is that, it doesn't make sense to me at all. Despite that 1 misunderstanding I love both phone a lot. I always get asked where I get my phones from and what brand they are. I love the sizes, battery life is amazing. And the storage space is perfect (I have 64gb SDcard in both phone). (Posted on 6/19/2016)
Hate this phone Review by Taylor
I've never had many problems out of a phone. Can you say REFUND I only like the size of this crappy phone. (Posted on 12/12/2015)
Compares well with other phones of the same price. Review by Charles
Compared to other Boost Mobile phones on the markets this really competes well being that it comes with lollipop. It's not likely to update to marshmellow when that comes out but it's a pretty decent phone for the price. (Posted on 8/19/2015)

5 Item(s)

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Support Overview

Check out the latest support materials here for your device.

Download user manuals, read FAQs, and upgrade your device's software.


Boost Max+ User Guide (English - PDF - 7.84MB)


Contact Support

If you have questions about how to use ZTE mobile devices or your device needs repair services, please contact our services hotline or email for more information.

Service Hotline: 877-817-1759
Hotline Hours: Monday-Sunday 8am - 9pm (CST)
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