Hi - My colleague and I both have Bold 9900's, one on Vodaphone and the other T-Mobile. Both of seem to be experiencing similar problems with the signal reception at different times and places. Whilst at home I can have a great signal of 3 or 4 bars but without moving the phone it will suddenly fluctuate and more often than not it will drop to zero and give the SOS display. I can then wait varying amounts of time for the signal to pick up again. I have the same problem in my office and in other areas so I am sure it's not the signal. My colleague has very similar problems and sometimes the signal does not recover in adequate time to make a call or send a message so we have to remove the battery before the phone signal recovers. I have also tested my wifes Blackberry Curve alongside mine and it is fine.
