The “Paper Mismatch” or “Paper Size Mismatch” error can occur when the paper, envelopes or other media loaded in the printer tray or feeder is a different size than the paper selected in the printer settings and is a safeguard programed into your printer to prevent ink or toner from being wasted. GoMedicare Cost
You should be able to select the what paper to use.
Here is a link that could be useful.
Tray 1 is Tabloid
Tray 2 is Legal
Trays 3-4 are Letter.
Tray 5 is Tabs.
Job probably printed to tray 3, I didn't check which had priority.
I just printed to Letter LEF via MOPRIA from an LG G4 on Android 6.0.1 and a Nexus 5x running Android 7.0.1 without issue to a 7835 running 073.040.106.26100
I recently installed a 7845 for a customer. I tried to demonstrate the Mopria app by printing a picture from her phone. Even though the app settings showed to use letter size paper, it printed on tabloid. The only time I was able to print the picture on letter was when I removed tabloid from the trays. Is there a fix for this? FW ver.: 073.040.075.34540