That is really odd on both accounts. Even though the version number is correct, I'm beginning to wonder about the phone. Having the Software Version up top in About phone is android standard though it's possible for some odd reason China is different. Download https://play.google.com/store/apps/details?id=com.cpuid.cpu_z
and see if everything checks out. Most often the giveaway is the Screen Resolution/Density not being 1080x1920/480dpi, root being detected on a factory purchased phone and the lack of humidity/temp sensors.
Unfortunately I cannot help you with that, as I could've sworn there was a language selector when the phone first booted.
Samsung Galaxy S® 4 MJA Rooted with CF Auto-Root Tutorial
HTC EVO Design 4G™ v4.0.3 Bootloader Unlocked & Rooted with HTC SuperTool v3
If it ain't broke, use a sledge hammer.