How can i speed up my Android App testing : if have an app release in the playstore and whenever i am working on updates, my testcycles take way too long.
The problem is, if i want to copy my own built apk to my phone, it recognizes it as may apk from the playstore and asks if i want to update it. If i try to update, it stops and says it could not be installed.
So what i have to do is upload my app to google dev console als intern test track and wait until it is there as an update on my phone. This can take nearly an hour. So if i want to test simple stuff, i have to wait nearly an hour to see the results. That is not practicable.

Is there any way to fasten my testing workflow up?
I think i am missing a really simple thing right now.

Currently i am working with some google play game services. Maybe that makes any difference.