How to Fix Photon Disconnects With ClientTimeout on Mobile Networks

Photon detects dead connections via a timeout on acknowledged traffic. Mobile radio handoffs and OS background throttling pause that traffic, so the timeout fires even though the player has not really left.

How to fix it

1. Tune the timeout and resend allowance

Increase PhotonNetwork.NetworkingClient.LoadBalancingPeer.DisconnectTimeout and the sent-count allowance so brief stalls do not trip detection, balancing against detecting truly dead links.

2. Service the connection in background

Keep calling the Photon service loop (or use background app refresh) while backgrounded where the platform allows, so keepalives continue and the link stays alive.

3. Reconnect and rejoin on resume

On OnDisconnected or app resume, call ReconnectAndRejoin() to slot the player back into their room within Photon's player TTL window instead of starting fresh.

Catching the ones you can't reproduce

The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.

Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.

This is where a tool like Bugnet earns its place. Its SDK captures every Unity error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.