Originally Posted by arob
You keep saying push-push is a bad idea, but I'm still unclear as to why it's such a bad idea? I'm trusting you have other reasons that the one you keep stating, as from my experience I don't agree with your criticisms for push-push.
Every push-push device I've ever owned has had the mechanism break long before the device's main function failed. In some cases, the push-push breaking broke the rest of the device, as it was required for its use. That's also the case with SIM cards. I don't really see how a tray could break.
As as for children - children are children, how can you honestly expect to be able to guard against a child at all times?
By not putting things in their reach. For some mind-boggling reason, parenting is as much a learning experience for the parent as it is the child.
"No! Don't touch that. Here, I'll just put it right back where it was when you managed to get to it the first time. No! Now it's broken!"
Really, having ANY kind of sim tray or slot opens the door for potential issues, so you can't really single out just the push-push.
Thing about a tray is it's not just going to go popping out willy nilly. It's like a cattle knot; the cow can pull on the end rope all it wants, but that just tightens the knot. The action that causes a positive response (removing the SIM by pushing) should NOT be able to be the same action that causes a negative response (bump the SIM area, SIM pops out). That's why I like a tray. Push-push tray has that problem, but your other solution is much better:
The only safe way to do it would be to go digital based SIMs that the network operator would have to load on the phone, but that would need a lot more thought put into it, as from what I've heard about it, it really only suits a US-style market where most handsets are bought from the network operator on contract, rather than a lot of other places where handsets are bought direct from the manufacturer or a retailer.
Phones are basically data-based all the time now, right? So it's simple. Go to the telecom's website on the device, sign up a new account, it sends a packet to the device to verify it has phone capability, and then it downloads the new SIM data onto the device. Reboot and you're on the new carrier.