The OxygenOS update for the OnePlus 5 and OnePlus 5T was delayed due to a bug related to the communication module, OnePlus said on the official forum on Friday.
"When we tested this version internally, we found a serious bug related to the communication module. The team evaluates this issue can seriously affect the user experience," OnePlus said.
This issue required a lot back and forth with communication carrier to solve the problems collaboratively, considerably delaying the release, the company said, adding, "In turn, this made it impossible to release the next stable OnePlus 5 and 5T version on time."
The OnePlus 5 was launched on June 21, 2017, in two variants: the 6GB+64GB version priced at 2,999 yuan ($443) and the 8GB+128GB Star Black Edition at 3,499 yuan.
The OnePlus 5T, on the other hand, was launched on November 27 and is powered by Qualcomm's Snapdragon 835 chip.