You can certainly store computer passwords on your phone... HOWEVER - make sure you (a) disguise them so they're not obvious to a 'casual snooper' who may also have access to your computer, and (b) store a copy of the data in another place in case your phone is stolen !
Simple. Email them to yourself.
You can't. Those programs and the people who ask for your usernames and passwords are fake! Even if they claim it's real, it's still fake! They steal your usernames and passwords and other information, and put viruses on your computer!
Yes, Syncing your phone to friends computer would show your pictures, downloaded songs,contacts, messages. However, he wouldn't get to know your passwords.
Under Settings>Security, you can check mark "Make passwords visible".
If you have the passwords for something, there isn't really much to hack. Hacking is concidered breaking in in to something without passwords, or aquiring passwords illicitly. Already having them is simply loggin in with them.
Look it up! You have a computer or smart phone, right? Answer it yourself! Geez, lazy!
Yes, SIM cards do store phone passwords. A SIM card helps the phone service provider identify users by a pass code. When a SIM card is inserted into a phone it remembers text messages, calls, missed calls, and anything else the owner of the phone does.
revealing an authenticator over the phone
revealing an authenticator over the phone
revealing an authenticator over the phone
revealing an authenticator over the phone
revealing an authenticator over the phone