Recently found that company developed a low power bluetooth devices in the use of some huawei mobile phones such as: P20, Mate20, glory paly models, such as the bluetooth connection or not is connected to the unstable situation, at first we thought to be the cause of the Android 9.0 system lead to the connection fails, after several huawei Android real machine test and found the Android 9.0 system did not cause the main cause of the failure of the bluetooth connection: there is a 9 and a huawei huawei Mate Mate 10 for Android 9.0 system, but the connection is normal, through analysis, found a connection or not connect instability models are relatively new models listed (2018), huawei still fruitless racking their brains to solve this difficult problem, send a specially for help post hope expert advice,

CodePudding user response:

You are using a mobile phone system on the bluetooth connection is not equipment? Or is your app connection on your device? If the equipment is not search, you can try the position information of cell phone switch, search again

CodePudding user response:

If it was the cause of the huawei new models, you can contact the after-sales technology, huawei huawei's website on or check if so, can also feedback to the company

CodePudding user response:

Confirm your code no problem of words, may be a hardware problem by crystal vibration frequency of, huawei part of the frequency range is small, can phone found hardware deviation is large, lead to can't search or connection problems

CodePudding user response:

My problem is: on P20 test, BLE to search, also can normal connection, BLE module USES USB - TTL connected to the PC, PC using serial debugger, speaking, reading and writing data, mobile phones to send, can receive data on PC, but when the PC sends the message, mobile terminal receiving less than,
Then test phones for the glory of 6 p, test is normal,

CodePudding user response:

Today I here also encountered this problem, P20, and a glorious (machine should be 16 years or so),
The same code in millet, samsung, oppo, in vivo can successfully send data to the bluetooth device for many times,

CodePudding user response:

Want to know what circumvent this method is not