I own a OnePlus X and within 8 months of using the phone it suddenly stopped working. Contacted OnePlus about the issue and they started a RMA and the service centre fo repair was Futuretel. Filled out the forms and sent my phone to this location on a Thursday.
To my surprise, I received my phone back the following Tuesday. Super quick turnaround and they repaired my phone for free since it was still under warranty. (Which I'm using to type this review). My logic board stopped working so they just swapped it out for a new one.
I was hesitant sending my phone in at first seeing all the previous yelp reviews but I guess I lucked out!