HTC One M8 for Windows - Manual (Page 20)

You need a 4G/LTE ™ plan to use the 4G/LTE network of
Verizon Wireless for voice calls and data services. Check with
Verizon Wireless for details.
If you want to use a case or screen protector, please don’t cover
and block the proximity sensor. Purchase a case or screen
protector designed for HTC One.
Back panel
1. Duo Camera
2. Flash
20 Unboxing