I have been a happy Calibre Companion user for many years. I have used it on a Nexus 7 (2012 Android 4.4.4) and a Galaxy Tab A (Android 7.1.1) without any problems.
I just installed it on My Galaxy A03S Smartphone (Android 11) and it will not sync. I didn't have any problem loading 4093 books. When I reconnect, it runs for about 5 minutes and stops with an error:
There was a timeout while communicating with the device in function: Device did not respond in reasonable time
Traceback (most recent call last):
File "calibre\devices\smart_device_app\driver.py", line 678, in _receive_from_client
File "calibre\devices\smart_device_app\driver.py", line 594, in _read_string_from_net
File "calibre\devices\smart_device_app\driver.py", line 579, in _read_binary_from_net
socket.timeout: timed out
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "calibre\gui2\device.py", line 87, in run
File "calibre\gui2\device.py", line 512, in _books
File "calibre\devices\smart_device_app\driver.py", line 59, in _synchronizer
File "calibre\devices\smart_device_app\driver.py", line 1299, in books
File "calibre\devices\smart_device_app\driver.py", line 59, in _synchronizer
File "calibre\devices\smart_device_app\driver.py", line 658, in _call_client
File "calibre\devices\smart_device_app\driver.py", line 690, in _receive_from_client
calibre.devices.errors.TimeoutError: There was a timeout while communicating with the device in function: Device did not respond in reasonable time
Any help would be greatly appreciated

dbart