OK - using the newer firmware (1.72.5.2) the phone is more stable with Mobiluck installed than on the older firmware. It affects MP3 playing less than on the old phone.
However, Mobiluck DOES still cause the annoying buzzing sound (sometimes) while playing MP3s. It does this whether or not it's running (I tested by un-installing the program) and it starts when the phone does a network cell switch, or redetects the network after being out of coverage. The buzzing should stop when the next MP3 track is played.
Doing more testing with regards to calling:
Test 1
Phone software: 1.72.5.2
Network: T-Mobile UK (known poor coverage area)
Phoning from: Landline
Applications running: Now!, MP3
Results: Phone returned to Now! screen, and rang as expected. MP3 was paused. On hangup, MP3 player was able to resume.
Test 2
Phone software: 1.72.5.2
Network: T-Mobile UK (known poor coverage area)
Phoning from: Landline
Applications running: Now!, MP3, Mobiluck (started immediately after finishing test 1)
Results: Call went straight to voicemail without the phone noticing. MP3 playing continued
Test 3
Phone software: 1.72.5.2
Network: T-Mobile UK (known poor coverage area)
Phoning from: Landline
Applications running: Now!, MP3, Mobiluck. (no changes made to phone after Test 2)
Results: Phone returned to Now! screen, and rang as expected. MP3 was paused. On hangup, MP3 player was able to resume.
Test 4
Phone software: 1.72.5.2
Network: T-Mobile UK (known poor coverage area)
Phoning from: Landline
Applications running: Now!, MP3. Mobiluck. (no changes made to phone after Test 2)
Results: Call went straight to voicemail without the phone noticing. MP3 playing continued
Test 5
Phone software: 1.72.5.2
Network: T-Mobile UK (known poor coverage area)
Phoning from: Landline
Applications running: Now!, MP3. (closed Mobiluck)
Results: Phone returned to Now! screen, and rang as expected. MP3 was paused. On hangup, MP3 player was able to resume.
Test 6
Phone software: 1.72.5.2
Network: T-Mobile UK (known poor coverage area)
Phoning from: Landline
Applications running: Now!, MP3. (no change from test 5)
Results: Call went straight to voicemail without the phone noticing. MP3 playing continued
Test 7
Phone software: 1.72.5.2
Network: T-Mobile UK (known poor coverage area)
Phoning from: Landline
Applications running: Now!, MP3. (no change from test 5)
Results: Phone returned to Now! screen, and rang as expected. MP3 was paused. On hangup, MP3 player was able to resume.
It seems from this that the get one / miss one call problem still exists...this is something Sendo need to look into!