Hello, I've got a problem with the GT-I5800 from Samsung (=Galaxy Apollo, =Galaxy 3). The problem is that I sometimes can't receive any SMS (Text Messages) on my phone. The problem started occuring about two months after I bought the phone, and has become worse since then. Right now I'm only receiving about 10% or 20% of the SMS sent to me. After a few days the entire bulk of missing SMS arrive all at the same time. I think the problem lies with the phone's software: - If I swap sim cards with another phone, the other phone receives all the missing SMS within about 10 minutes. - The problem is not related with the signal type (HSDPA, UMTS, EDGE, GSM, ...) nor is it related to the signal quality (Even when the signal is extremely strong I still don't receive my missing SMS) - The weird thing is that I can still send and receive e-mails, browse the net, call or get called. The problem only occurs with incoming SMS (And probably also MMS, but I haven't tested that out yet). I have already tried the following: - Turn the phone off/on and take the battery out for a moment. - Set the connection to WCDMA-only - Set the connection to GSM-only I would like to keep a complete reset as the last option here. The goal is to find the cause for this problem so I can rest assured this won't happen again or at least know what to do to avoid the problem. It takes a while before I notice that I'm not receiving SMS - usually 'too late' - so I'm really looking for a solution and a complete reset cannot guarantee that the problem won't occur again. - Does anyone have some suggestions or a solution to this problem? Is there anyone else experiencing the same problem? - Unfortunately I am unable to reproduce the problem. At the moment it seems like the problem occurs "randomly", so if anyone has suggestions on how to reproduce the problem they're also welcome, of course. Thanks in advance!