Recently, some OPPO R9/R9 Plus users reported that they had encountered the problem that the secondary card suddenly had no signal, or the secondary card had a signal but could not reach the phone. According to ROM developers @ wuxianlin000000 broke the news, this situation is the most serious in the telecommunications main card, China Unicom deputy card. He also stated that after the sale, he passed the inspection of the instrument and the contrasting machine and admitted that the problem existed. It is understood that the OPPO R9/R9 Plus is currently installed based on Android 5.1 Color OS. The official OPPO staff also said that R9 Plus is not compatible with Android 6.0 hardware (fingerprint and camera module driver is not compatible), so it will not be upgraded to Android 6.0 version. It is still uncertain whether it is a cell phone problem or a Unicom issue. The OPPO has not yet responded, and we will also pay close attention to the latest progress. Laptop Stand Aluminum Adjustable Shenzhen ChengRong Technology Co.,Ltd. , https://www.chengrongtech.com
