10:10 pm
It seems these phones have at least two or three different "passwords".
There is a voice mail password, which is set to 11111 by default, and it's needed to access voice mail box.
There is a secuty code. It's needed to change security settings. My question is:
1. what do the three security levels (phone, memory, off) mean?
And there is a menu to "change access code".
But another questions:
2. what is "access code", and what is it for?
My other questions:
3. how do I set up my phone so that if it is lost, the finder cannot take the SIM card out and use it in his/her phone?
4. how do I set up my phone so that if it is lost, the finder cannot unlock the keypad and use the phone?
My phone has $130 credit on it and I'm going to lend it to a child for emergency use. The possibility of losing the phone is real.
10:58 pm
here's what i figured out that may be of use to you:
in the access codes submenu, change the PIN from the default (1234) to something else. whenever the phone is powered up, the PIN is required to unlock it. i believe this lock occurs at the level of the SIM card.
phone level security probably secures your phone's physical use, i.e. buttons won't work until unlocked. memory level security may allow someone to use the phone but not access/alter the contents of memory. but i don't know if this feature works (i tried both options on my 2760, but got no prompts or restrictions when trying to use the phone or altering memory contents).
another password in the security folders menu is for controlling phone usage, like allowing long distance or roaming. i could not guess the factory/default password and so haven't been able to use this feature.
my impression is that the plan providers don't want customers to have much control over the security folder's options. the user guide deliberately has no details on the security folder in the menu items.
8:58 am
March 15, 2008
There are essentially two levels of PIN security on the 1600 (and I presume the other models.)
1. Phone level secures the phone. It's stored in the phone. You need to supply the PIN when you power up the phone. If you can't provide it then your phone doesn't work. You could, however, take the SIM out of the phone and use it on another phone.
2. SIM level secures the SIM. It's stored in the SIM. You also need to supply that PIN when you power up the phone. If you can't provide it then your phone won't work but it will work with another SIM. If you take the SIM out of the phone and use it in another phone you will again be prompted for the SIM password.
You can also enable both passwords, however, then you will need to enter both before you can use your phone. ISTM the SIM password is more useful than the phone password. If you lose your phone at least whoever finds/stole it can't place any calls with your SIM. (OTOH they won't be able to look at your Address Book to find your phone numbers to try to contact you.)
Beware that if you enter a PIN incorrectly 3 or 5 (depends on phone) times you'll be locked out. In that case you'll need the appropriate PUC/PUK. You can usually get this from SO CS but it may be a hassle. Better to remember your PIN
P.S. Another caveat. IIRC someone who lost their SIM reported that SO wanted $25 to replaced it and that they wouldn't restore the airtime balance on the lost SIM. So, unlike with post-paid plans, you have to be very careful not to lose your phone in the first place. (Or use smaller top-ups so as to minimize your potential losses.)