I also updated to v20 via phone update (15.4Mb). My problem slightly different. My sim password no problem. Then suddenly another 'code' requested, with keypad 1 darkened (cannot press).. but after inserting ANY code, it says code unaccepted/wrong (cant remmber exactly) but phone can use as normal. Also experienced a horizontal red line reset which required battery to be removed. After restart, that FUNNY code request again..

BUGS IN V20 FIRMWARE (for me):

1) Funny code request (which has no function)
2) horizontal reset still present- so far once (I had 1 episode in v11)
3) fullscreen qwerty keyboard in Web app acting strange; cannot go back/edit previously typed stuff- must use backspace. Also the 'forward'/'backward' triangles not functioning. So far only in Web App. SMS all ok. Dunno about other apps yet.
4) My Garmin caused a reset once... hopefully only once..

Anymore to add? All above never happened in v11 except horizontal reset..

My battery can fully charge after update...


Muiz

Still got. I turned by phone off and on again and after entering my sim password phone was ok. Then when in SMS, the requested the code again- yes it was in alphanumeric. Question is- for what app/phone/sim? I entered my sim code, said code error, but phone working like normal...

I think I found the cause for FUNNY CODE... most likelly totalrecall. I set to autostart and password protected it.. when I turned autostart off, turning phone off and on again- no more funny code request! I guess the code might have been for totalrecall!

Those having this code error, u have totalrecall installed?

Anyone using the built-in Web app noticed the problem using fullscreen qwerty? Cannot edit previously typed unless using backspace?

my v11 no problem at all... I think when install v20 must make sure all feng shui correct and aligned cuz v20 bugs are variable competely!

I have the same issue, hard reset wont help.. I call it the funny code as i code protects for NOTHING.. initially I tot due to totalrecall app, but still got after hard reset.. dont bother.. AGAIN, need to wait for more FW update!!!

btw, my tube cant hard reset via*#7370#.. still have code error(and will not proceed to reset), but certificate issue solved with update...

my advise is to get the car holder with adjustable sides.. can get access to the unlock slide.. Another tip, get the solid plastic ones.. the ones with adjustable metal bar will shake when driving- can get headache lor..