So i just bought a new M7450 yesterday to replace my older M7310 that went missing. I noticed that the device doesnt display the remaining battery percentage in the top corner next to the battery icon. I've looked all over the menus and havent been able to find an option to show this. However on the tpMIFI app on my phone, i can see remaining charge percentage, but no idea why it wont display on the device itself. 

My old M7310 did not have this problem, the battery percentage was always displayed in the upper corner next to the battery icon, and i think its a far more useful indicator in real world use. I also looked on google images, and found that some M7450s had the same 'issue' as mine, while some were completely fine with the % showing up on the display, which is making it pretty confusing on what the root cause is.