What should I do if AppTouch fails to download or install an app because of "No certificate found (Error code: -103)"?

This may be because of network problems or app incompatibility. Try the following possible solutions:

1. Delete the already downloaded app package or stop the ongoing download. Switch to a different network then try to download or install the app again.

2. If the above solution doesn't work, this indicates the app is not compatible with Android 7.0. It is recommended that you open AppTouch, go to Me > Problems and suggestions, and submit a problem description with the information below to our customer service for assistance. We will notify the developer of the compatibility problem.

*Phone model *Android version*Serial number (SN) *Name of affected app *Time of problem*AppTouch version *Time of error log upload (go to Me > Problems and suggestions, select Please upload error log, enter your information and touch Submit to upload the log) *Whether you have updated your ROM version in the past two weeks *Contact method

If the problem is not resolved, please contact:https://consumer.huawei.com/en/support/hotline/