Originally Posted by bodek400
Hello ,I have problem a SM-G90H press and keep holding the Volume down and Home button at the same time, with these two buttons pressed press the Power Button
and I have message is displayed ,china letters ,what to do ?
Sorry, but it sounds like your phone may be a clone (fake). You didn't provide enough information to be certain and need to look into this more. Download an app like "Phone Info" from the Play store and read some threads about clones to learn more.
A more definitive test would be to benchmark the processor. There are some pretty convincing clones available but none of them approach the genuine S5 processor power.
If you are lucky, you could have a genuine phone with Chinese firmware. But it really doesn't appear that is the case.