Android Question App install error

Which version of Java JDK are you using? And minSdkVersion - targetSdkVersion in the file Manifest?

My java jdk is jdk1.8.0_73, the minSdkVersion is 5 and the targetSdkVersion is 14

We have another app running (hypnose power) with same structure, everything is installing and running well here. I compared the codes, no difference, even in manifest.

Probably there is something wrong on users' device.

Try to suggest them these steps:

http://www.techbae.com/fix-google-play-store-error-103-android-phones-downloading-apps/

everything already done and tested... no changes...still 103....by the way...thank you very much (mille gracie)
for your support so far

we deleted the updates from playstore and reopened...another error message appeared now..."bad signature in package file"

Have you tried to upload a new build to Google Play?

Were you able to solve this?

I have the same problem:
One person cannot install my app from Google Play. After downloading he gets the 103 Error. He has a Galaxy S3 Mini with 4.1.2.
He tried to go through all the troubleshooting you find by googling (remove/reactivate google account, factory reset, etc.) without success.

I also found this on Stackoverflow: http://stackoverflow.com/questions/33149140/play-store-cant-install-app-error-code-103

Older Android devices are unable to recognize SHA256 hash funcitons. Adding:

-sigalg SHA1withRSA -digestalg SHA1

as parameters to jarsigner should solve the issue even when using JDK 1.8.

Click to expand...

I have to use an existing and non-b4a-compatible keystore, so i produced an unsigned apk with b4a and then signed it with jarsigner. Could someone please give me an example of a complete jarsigner commandline including the above suggestion from stackoverflow, so i can test it? Thanks!

Any other comments/suggestions/solutions to this issues are welcome as well of course!