Originally Posted by Christopher Price
Need much more information to help. What S4 firmware, carrier, and Android version are you running? What Nexus 7 firmware? Are you trying to connect over Wi-Fi or USB?
It might be about the Wifi connection, I had some connectivity issues over Wifi myself the last day, but they were fully random, at a first look they point to the TCP socket.... I'm investigating this.
I got some Wifi disconnected myself but it is very random, it can occur after 1-2 minutes or after 3-4 hours...
so testing potential FIX for the issue isn't going to be easily. At the first investigation it looks to be something related with the pooling/keeping connection alive. I have tweaked this and made a new build, currently running for about 20 mins and looks OK, but as said the disconnect can occur randomly at any point.
The worst part is that the logs do not give any hint on what could be the cause of this, neither on the HU part, neither on the AA side, they only mention a broken PIPE bu no hint on what can be the cause...