Having worked with Huawei....
...I can say their support is second to none. Yes sometimes there are language barriers, but bloody hell if you have a problem or a bug or would like a tweak done, they listen and usually sort pretty damm quick.
Others take note, this is another reason they are stamping over other companies. They don't have one guy in support that can help, but he's on holiday for two weeks, they have a thousand that can help....and they do help.