Though its 3,300mAh battery remains non-removable, one major difference about the Max compared to the rest of the One line is that its back side can be detached via a toggle button on the right edge of the device. This enables users access to the expandable microSD card slot.
The Max's 5.9-inch display (shown here in the middle with the HTC One to the left and the Mini to its right) boasts full HD 1080p resolution and a sharp 367ppi.
Powering this mammoth smartphone is a 1.7GHz Snapdragon 600 quad-core processor. Though its CPU is still top-notch, it's the same CPU that powers the HTC One. The handset also includes 2GB of RAM and 32GB of internal storage.
The One Max measures 6.5 inches tall, 3.3 inches wide, 0.4 inches thick, and weighs a whopping 7.7 ounces. In contrast, the 5.7-inch Samsung Galaxy Note 3 is thinner, lighter, and more compact at 6 inches tall, 3.1 inches wide, 0.33 inches thick, and only 5.9 ounces in weight.
In addition to a 3.5mm headphone jack (right), the Max also has an IR blaster located on its top edge. Also found in the One, the infrared sensor turns the handset into a remote control and enables users to navigate through Sense TV.
The Max will ship with Android 4.3 Jelly Bean and the most recent HTC Sense 5.5 user interface. New software UI features include the ability to save articles offline from the native Internet browser, Instagram integration, sharable Zoe photos, and a "Do Not Disturb" function that allows users to silence their phones and turn off notifications at a predetermined time.
Just like the One, the Max features a 2.1-megapixel camera above the display, as well as dual front-facing speakers.
Rear-facing camera specs also remained the same. The smartphone sports a 4-"Ultrapixel" camera and LED flash.
Pictured here with the rest of the One family, the One Max will be available to Sprint and Verizon Wireless customers beginning mid-October.