How can I add and manage contacts on a SIM card with an Android phone (HTC Magic)? I'm aware of 1 application which is capable of doing this but it cost 4€ for SIMPLY managing SIM contacts o_O
The default (well, default on my Samsung Galaxy S - I guess default in Android doesn't mean much) contact manager can do a part of this. When creating a new contact, it gives the option of storing it on the SIM, Phone memory, or a linked account (like Google).
There's the option of copying contacts from SIM to Phone or Phone to SIM (Contacts->Menu->more -> Copy contacts). Import/Export is in the same spot.
I know these suggestions aren't quite what you're looking for. I don't know if contacts can be stored on a SIM card in different ways depending on the Phone. From what I've seen the software that comes with Android phones might (depending on manufacturer) let you move contacts around.
In general, don't store your contacts on the SIM card. There is no advantage in doing so. Modern smartphones are usually only able to import/export contacts stored on the SIM card.
The contact App from Android 4.0 on provides a feature which lets you import your contacts form SIM card to either Google contacts (which I highly recommend) or simply local phone contacts.
Open Contacts > Menu > Import/export > Import from SIM card
Furthermore the "Messaging" app of Android 4.0 is able to mange the text messages stored on the SIM card.
There are only a few very narrow reasons for storing contacts on a SIM. Some like to be able to swap the SIM card into a small feature phone when performing certain activities (like trail running).
However, note that contacts stored on the SIM card are unprotected. Everyone who has access to the SIM card can read your contacts. This impacts your and your contacts privacy.
Is there some specific purpose or feature that would necessitate using the SIM?
If you have an Android phone then presumably you have a Google account. Any contacts added to your Google phone will by sync'd automatically to the signed in Google account unless you turn that function off. Why not just use Google to manage them? Then you can keep your SIM and sd card free of unneeded data and if you lose or trade up your phone you never lose your contacts. They would still exist in Google. Plus you can sign into Gmail to manage contacts that way.
For managing your SIM contacts you can try SIM Contacts Manager.
New (manual) contacts should get backed up if your gmail account is linked, and they should show up in your gmail contacts.
But my old ones (on sim and phone before email was linked) did not. I had to copy the ones from my sim and phone to my SDcard by going into contacts (people) then
menu -> export to SD (as for example
And after that
menu -> import to (my email) linked gmail address. And i just told it to import all
vcf files on the SD.
And that was it, they were now all in my gmail contacts.