Can you please attach your project ? If not possible, please attach a demo project which reproduces the issue.
Can you test our code examples from PSoC Creator like (PSoC_BLE_Find_me) and let us know if you are facing the connection isssues?
All the test i did, are made with the code examples from PSOC (BLE_batteryLevel).
Update of the issue, sometime i establish connection successfully with the mate 20 pro, when i retry the connection after 100ms on the "Unhandled error code on connectionStateChanged: 133 0"
I attach an exemple with connection the issue
I had tested the project in CYBLE-022001-01 Module(Currently i don't have the CYBLE-012011 module) with VIVO Y81 smartphone and it is working fine for me. I don't have any issue with connection establishment. Could you please check with the 'BLE_FindMe' code example project in the PSoC Creator ? If you have other module, then please check with that module also.
If you have CY5677 Cypress dongle, please check with it in windows and let me know the observations.
I finally found my cy8ble kit (https://www.cypress.com/documentation/development-kitsboards/psoc-6-ble-prototyping-kit-cy8cproto-063-ble ) with the module : CYBLE-416045-02
With this kit, I don't have any connection issue, seam to be an module related issue. The problem is that the board is already designed, and I already have supply the ble module.
edit: After that, I try with findme exemple, and I don't have connection issue (module CYBLE-012011).
I'll investigate more on that
edit 2: Just a luck, I can't connect with the findme Exemple. I ll try unsolder / resolder the module