Nokia :: 5230 - How To Remove Memory Card To Insert New

I'm having 3 issues with my recently bought cell-phone(Nokia 5230).

First of all, I've bought a 16GB memory card, but I don't know how to remove the 2GB one it currently has inserted. I press down the memory card but it won't (Fully) come out! Can someone explain me how to remove it, please?

Another issue is with some Bluetooth connections.

I tried to transfer some songs from my girlfriend's cell-phone, I've connected the 2 devices by creating an authorized(Automatically transfers data between the 2 cell-phones) paired connection. But I can't transfer data from her cell-phone to mine. They connect but the data isn't transferred! Side note: I've been able to transfer data before with the same devices, it would only transfer whenever it wanted, though. If it failed, I had to change the permissions and just try again. It could fail countless times(Once it failed like... 15 times in a row).

Now, it just won't transfer. They connect and the "Receiving data via Bluetooth" screen appears, but nothing happens until the connection times out. I've done nothing wrong and everything is fine, I guess. Does it only happen to me?

My last (main) problem:Battery.

My battery has a very short duration time. At the first time I turned it on, I've used it until the battery ran out, like I was told so. Then, I've plugged it to the switch and turned it on. I've used it through that time though, only to send and receive text messages. I exchange about 400 text messages per day. I've done everything I could to save battery. I've turned off the delivery reports, I always have it in silent mode, the screen bright is lower than the default value, etc. Still, it only lasts me like 20 hours before it ran's out. The first bar takes "a lot" of time to disappear, but the last 6 ones disappear quite fast.

I've tried to let him charge for 10-12 hours 2 times after that, but I didn't notice any change.If I'm on a long duration call, the battery runs out after... 3.45-4.30 hours. But that's definitely not the problem.I don't know if this affects, but it is always connected to my operator through 3G.