Share your experience!
First of all Happy new year to all members of this forum! I have bought a xperia arc at september and i can't login in android market from the first time!
I write the right pass (username and password) but it says u have problem with ur system or phone ........so i dont know what can i do ...if anyone is Greek please answer me in Greek...Thanks..
Solved! Go to Solution.
I also had the same problem when i buy my Arc... i solved my problem by installing the new version of market which i downloaded from market and after installing it give the option that no account registered want to add then i tap on yes and using wifi network it registered...
some guys also suggest me to restore factory but in my case that didn't work... if you have wifi connection access then you can try by reset your phone by going->settings->privacy->factory data reset..
may be this help
I also had the same problem when i buy my Arc... i solved my problem by installing the new version of market which i downloaded from market and after installing it give the option that no account registered want to add then i tap on yes and using wifi network it registered...
some guys also suggest me to restore factory but in my case that didn't work... if you have wifi connection access then you can try by reset your phone by going->settings->privacy->factory data reset..
may be this help
Thanks for the help but how can i download the new version of market?from where?at the pc or at the phone?and how?
The new version of Market is downloaded automatically when you start Market - which would be a problem here since that's your problem in first place.
I suggest you first of all go to Settings > Apps > Manage apps > Market > Uninstall updates. Also tap on Clear data.
When this is done you start Market again.
Also - have you made any changes on your Google account recently? E.g. activated 2 step verification or something similar with the security settings?
I have activated and verification my google account already ,,,i dont have do any other change on my settings...
btw Thanks for your help!I Will try it and i will answer you again!
Do that and let me know. 
2 step verification means the account will ask for two different passwords.
Have a look at this and see if this will help:
Sorry for i ask u again but i should uninstall "market" ?because i dont find "uninstall update of market" :X
Market cannot be uninstalled so don't worry about that part. 
When you go to Settings > Apps > Manage apps > All (tab) > Market, you should find the option "uninstall updates" in the top right corner. If there are no updates installed it's not available though. It will probably just say "cancel" if so.
You can't uninstall the market
you can download it from your computer through this link
http://www.androidpolice.com/2011/11/19/download-updated-android-market-v3-3-12/
after downloading this apk file then install it in your phone and connect to wifi network and add the account..
i hope it help you